73161939955 has 16 divisors (see below), whose sum is σ = 94554573120. Its totient is φ = 54023372928.

The previous prime is 73161939931. The next prime is 73161939967. The reversal of 73161939955 is 55993916137.

It is a cyclic number.

It is not a de Polignac number, because 73161939955 - 2³¹ = 71014456307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73161939955.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116634 + ... + 1180336.

It is an arithmetic number, because the mean of its divisors is an integer number (5909660820).

Almost surely, 2^73161939955 is an apocalyptic number.

73161939955 is a deficient number, since it is larger than the sum of its proper divisors (21392633165).

73161939955 is a wasteful number, since it uses less digits than its factorization.

73161939955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81390.

The product of its digits is 6889050, while the sum is 58.

The spelling of 73161939955 in words is "seventy-three billion, one hundred sixty-one million, nine hundred thirty-nine thousand, nine hundred fifty-five".