80501772527138 has 16 divisors (see below), whose sum is σ = 120867727721400. Its totient is φ = 40212530745600.

The previous prime is 80501772527101. The next prime is 80501772527147. The reversal of 80501772527138 is 83172527710508.

It can be written as a sum of positive squares in 4 ways, for example, as 78807289758409 + 1694482768729 = 8877347^2 + 1301723^2 .

It is a super-2 number, since 2×80501772527138² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349210538 + ... + 349440986.

Almost surely, 2^{80501772527138} is an apocalyptic number.

80501772527138 is a deficient number, since it is larger than the sum of its proper divisors (40365955194262).

80501772527138 is a wasteful number, since it uses less digits than its factorization.

80501772527138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396133.

The product of its (nonzero) digits is 6585600, while the sum is 56.

The spelling of 80501772527138 in words is "eighty trillion, five hundred one billion, seven hundred seventy-two million, five hundred twenty-seven thousand, one hundred thirty-eight".