77000015540 has 48 divisors (see below), whose sum is σ = 184848650112. Its totient is φ = 26393060736.

The previous prime is 77000015473. The next prime is 77000015567. The reversal of 77000015540 is 4551000077.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476594 + ... + 617366.

It is an arithmetic number, because the mean of its divisors is an integer number (3851013544).

Almost surely, 2^77000015540 is an apocalyptic number.

77000015540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77000015540 is an abundant number, since it is smaller than the sum of its proper divisors (107848634572).

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

77000015540 is a wasteful number, since it uses less digits than its factorization.

77000015540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144696 (or 144694 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 29.

The spelling of 77000015540 in words is "seventy-seven billion, fifteen thousand, five hundred forty".