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68692572692 = 2265326298841
BaseRepresentation
bin111111111110011001…
…010111101000010100
320120022022012020202222
4333332121113220110
52111140244311232
651320144121512
74651160143142
oct777631275024
9216268166688
1068692572692
1127150191637
1211391006298
13662960bb23
143479120592
151bc0954d12
hexffe657a14

68692572692 has 12 divisors (see below), whose sum is σ = 120396098676. Its totient is φ = 34293687360.

The previous prime is 68692572667. The next prime is 68692572719. The reversal of 68692572692 is 29627529686.

It can be written as a sum of positive squares in 2 ways, for example, as 20470169476 + 48222403216 = 143074^2 + 219596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13146809 + ... + 13152032.

It is an arithmetic number, because the mean of its divisors is an integer number (10033008223).

Almost surely, 268692572692 is an apocalyptic number.

It is an amenable number.

68692572692 is a deficient number, since it is larger than the sum of its proper divisors (51703525984).

68692572692 is a wasteful number, since it uses less digits than its factorization.

68692572692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26299498 (or 26299496 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 62.

The spelling of 68692572692 in words is "sixty-eight billion, six hundred ninety-two million, five hundred seventy-two thousand, six hundred ninety-two".

Divisors: 1 2 4 653 1306 2612 26298841 52597682 105195364 17173143173 34346286346 68692572692