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68465020877 = 1129272126441
BaseRepresentation
bin111111110000110101…
…010100111111001101
320112201110000102100222
4333300311110333031
52110204021132002
651241415001125
74642425034601
oct776065247715
9215643012328
1068465020877
11270437a0590
12113289691a5
1365c1428c96
143456c09501
151baa9a71a2
hexff0d54fcd

68465020877 has 8 divisors (see below), whose sum is σ = 74714666112. Its totient is φ = 62219634400.

The previous prime is 68465020867. The next prime is 68465020879. The reversal of 68465020877 is 77802056486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68465020877 - 228 = 68196585421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68465020879) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1031024 + ... + 1095417.

It is an arithmetic number, because the mean of its divisors is an integer number (9339333264).

Almost surely, 268465020877 is an apocalyptic number.

It is an amenable number.

68465020877 is a deficient number, since it is larger than the sum of its proper divisors (6249645235).

68465020877 is a wasteful number, since it uses less digits than its factorization.

68465020877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129379.

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 68465020877 in words is "sixty-eight billion, four hundred sixty-five million, twenty thousand, eight hundred seventy-seven".

Divisors: 1 11 2927 32197 2126441 23390851 6224092807 68465020877