73981532915 has 32 divisors (see below), whose sum is σ = 90834216000. Its totient is φ = 57828556800.

The previous prime is 73981532899. The next prime is 73981532939. The reversal of 73981532915 is 51923518937.

It is not a de Polignac number, because 73981532915 - 2⁴ = 73981532899 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 36677987 + ... + 36680003.

It is an arithmetic number, because the mean of its divisors is an integer number (2838569250).

Almost surely, 2^73981532915 is an apocalyptic number.

73981532915 is a deficient number, since it is larger than the sum of its proper divisors (16852683085).

73981532915 is a wasteful number, since it uses less digits than its factorization.

73981532915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823.

The product of its digits is 2041200, while the sum is 53.

The spelling of 73981532915 in words is "seventy-three billion, nine hundred eighty-one million, five hundred thirty-two thousand, nine hundred fifteen".