77682249690 has 32 divisors (see below), whose sum is σ = 186459174720. Its totient is φ = 20712847104.

The previous prime is 77682249559. The next prime is 77682249709. The reversal of 77682249690 is 9694228677.

It is a super-2 number, since 2×77682249690² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117762 + ... + 411378.

It is an arithmetic number, because the mean of its divisors is an integer number (5826849210).

Almost surely, 2^77682249690 is an apocalyptic number.

77682249690 is an abundant number, since it is smaller than the sum of its proper divisors (108776925030).

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

77682249690 is a wasteful number, since it uses less digits than its factorization.

77682249690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302446.

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 77682249690 in words is "seventy-seven billion, six hundred eighty-two million, two hundred forty-nine thousand, six hundred ninety".