73261831638261 has 48 divisors (see below), whose sum is σ = 120328877085696. Its totient is φ = 39396694385664.

The previous prime is 73261831638257. The next prime is 73261831638271. The reversal of 73261831638261 is 16283613816237.

It is not a de Polignac number, because 73261831638261 - 2² = 73261831638257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73261831638211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19616940 + ... + 23050986.

It is an arithmetic number, because the mean of its divisors is an integer number (2506851605952).

Almost surely, 2^{73261831638261} is an apocalyptic number.

It is an amenable number.

73261831638261 is a deficient number, since it is larger than the sum of its proper divisors (47067045447435).

73261831638261 is a wasteful number, since it uses less digits than its factorization.

73261831638261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442618 (or 3442611 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 57.

The spelling of 73261831638261 in words is "seventy-three trillion, two hundred sixty-one billion, eight hundred thirty-one million, six hundred thirty-eight thousand, two hundred sixty-one".