80962562640 has 40 divisors (see below), whose sum is σ = 250983944928. Its totient is φ = 21590016640.

The previous prime is 80962562623. The next prime is 80962562647. The reversal of 80962562640 is 4626526908.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 80962562640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80962562647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168671766 + ... + 168672245.

Almost surely, 2^80962562640 is an apocalyptic number.

80962562640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80962562640 is an abundant number, since it is smaller than the sum of its proper divisors (170021382288).

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

80962562640 is a wasteful number, since it uses less digits than its factorization.

80962562640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337344027 (or 337344021 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 80962562640 in words is "eighty billion, nine hundred sixty-two million, five hundred sixty-two thousand, six hundred forty".