68526770690 has 128 divisors (see below), whose sum is σ = 149319548928. Its totient is φ = 22145840640.

The previous prime is 68526770629. The next prime is 68526770693. The reversal of 68526770690 is 9607762586.

It is a super-2 number, since 2×68526770690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68526770693) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42641867 + ... + 42643473.

It is an arithmetic number, because the mean of its divisors is an integer number (1166558976).

Almost surely, 2^68526770690 is an apocalyptic number.

68526770690 is an abundant number, since it is smaller than the sum of its proper divisors (80792778238).

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

68526770690 is a wasteful number, since it uses less digits than its factorization.

68526770690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 68526770690 in words is "sixty-eight billion, five hundred twenty-six million, seven hundred seventy thousand, six hundred ninety".