77606015531 has 16 divisors (see below), whose sum is σ = 85290278400. Its totient is φ = 70028560800.

The previous prime is 77606015521. The next prime is 77606015551. The reversal of 77606015531 is 13551060677.

It is not a de Polignac number, because 77606015531 - 2¹⁸ = 77605753387 is a prime.

It is a super-2 number, since 2×77606015531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77606015521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753500 + ... + 850278.

It is an arithmetic number, because the mean of its divisors is an integer number (5330642400).

Almost surely, 2^77606015531 is an apocalyptic number.

77606015531 is a deficient number, since it is larger than the sum of its proper divisors (7684262869).

77606015531 is a wasteful number, since it uses less digits than its factorization.

77606015531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97330.

The product of its (nonzero) digits is 132300, while the sum is 41.

The spelling of 77606015531 in words is "seventy-seven billion, six hundred six million, fifteen thousand, five hundred thirty-one".