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145969429878 = 23231325908667
BaseRepresentation
bin1000011111110001110…
…1001011110101110110
3111221202212020100002200
42013330131023311312
54342421133224003
6151020223245330
713355154452646
oct2077435136566
9457685210080
10145969429878
11569a5a35168
1224358a49846
13109c351641c
1470ca360526
153be4d1b6a3
hex21fc74bd76

145969429878 has 24 divisors (see below), whose sum is σ = 317277548328. Its totient is φ = 48501022752.

The previous prime is 145969429831. The next prime is 145969429883. The reversal of 145969429878 is 878924969541.

145969429878 is a `hidden beast` number, since 1 + 4 + 596 + 9 + 4 + 29 + 8 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12948700 + ... + 12959967.

It is an arithmetic number, because the mean of its divisors is an integer number (13219897847).

Almost surely, 2145969429878 is an apocalyptic number.

145969429878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145969429878 is an abundant number, since it is smaller than the sum of its proper divisors (171308118450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145969429878 is a wasteful number, since it uses less digits than its factorization.

145969429878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25908988 (or 25908985 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 72.

The spelling of 145969429878 in words is "one hundred forty-five billion, nine hundred sixty-nine million, four hundred twenty-nine thousand, eight hundred seventy-eight".

Divisors: 1 2 3 6 9 18 313 626 939 1878 2817 5634 25908667 51817334 77726001 155452002 233178003 466356006 8109412771 16218825542 24328238313 48656476626 72984714939 145969429878