73664515015 has 16 divisors (see below), whose sum is σ = 108796822848. Its totient is φ = 46627209216.

The previous prime is 73664515013. The next prime is 73664515037. The reversal of 73664515015 is 51051546637.

It is not a de Polignac number, because 73664515015 - 2¹ = 73664515013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73664515013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80949562 + ... + 80950471.

It is an arithmetic number, because the mean of its divisors is an integer number (6799801428).

Almost surely, 2^73664515015 is an apocalyptic number.

73664515015 is a deficient number, since it is larger than the sum of its proper divisors (35132307833).

73664515015 is a wasteful number, since it uses less digits than its factorization.

73664515015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161900058.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 73664515015 in words is "seventy-three billion, six hundred sixty-four million, five hundred fifteen thousand, fifteen".