76515057540 has 144 divisors (see below), whose sum is σ = 248991986880. Its totient is φ = 19700392320.

The previous prime is 76515057473. The next prime is 76515057547. The reversal of 76515057540 is 4575051567.

76515057540 is a `hidden beast` number, since 7 + 6 + 5 + 1 + 50 + 57 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (76515057547) 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 47 ways as a sum of consecutive naturals, for example, 130506 + ... + 412385.

It is an arithmetic number, because the mean of its divisors is an integer number (1729111020).

Almost surely, 2^76515057540 is an apocalyptic number.

It is an amenable number.

76515057540 is an abundant number, since it is smaller than the sum of its proper divisors (172476929340).

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

76515057540 is a wasteful number, since it uses less digits than its factorization.

76515057540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542944 (or 542930 counting only the distinct ones).

The product of its (nonzero) digits is 735000, while the sum is 45.

The spelling of 76515057540 in words is "seventy-six billion, five hundred fifteen million, fifty-seven thousand, five hundred forty".