68657770862 has 16 divisors (see below), whose sum is σ = 106315200000. Its totient is φ = 33219504120.

The previous prime is 68657770861. The next prime is 68657770871. The reversal of 68657770862 is 26807775686.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 68657770795 and 68657770804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68657770861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972889 + ... + 2007387.

It is an arithmetic number, because the mean of its divisors is an integer number (6644700000).

Almost surely, 2^68657770862 is an apocalyptic number.

68657770862 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

68657770862 is a deficient number, since it is larger than the sum of its proper divisors (37657429138).

68657770862 is a wasteful number, since it uses less digits than its factorization.

68657770862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66631.

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 68657770862 in words is "sixty-eight billion, six hundred fifty-seven million, seven hundred seventy thousand, eight hundred sixty-two".