73261831638156 has 48 divisors (see below), whose sum is σ = 198116502474240. Its totient is φ = 20637135671040.

The previous prime is 73261831638097. The next prime is 73261831638157. The reversal of 73261831638156 is 65183613816237.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 73261831638156.

It is not an unprimeable number, because it can be changed into a prime (73261831638157) 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, 6141998701 + ... + 6142010628.

It is an arithmetic number, because the mean of its divisors is an integer number (4127427134880).

Almost surely, 2^{73261831638156} is an apocalyptic number.

It is an amenable number.

73261831638156 is an abundant number, since it is smaller than the sum of its proper divisors (124854670836084).

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

73261831638156 is a wasteful number, since it uses less digits than its factorization.

73261831638156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12284009414 (or 12284009412 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 60.

The spelling of 73261831638156 in words is "seventy-three trillion, two hundred sixty-one billion, eight hundred thirty-one million, six hundred thirty-eight thousand, one hundred fifty-six".