80072946261 has 24 divisors (see below), whose sum is σ = 144200631744. Its totient is φ = 41596335360.

The previous prime is 80072946241. The next prime is 80072946269. The reversal of 80072946261 is 16264927008.

It is a happy number.

It is not a de Polignac number, because 80072946261 - 2¹⁰ = 80072945237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80072946269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57771996 + ... + 57773381.

It is an arithmetic number, because the mean of its divisors is an integer number (6008359656).

Almost surely, 2^80072946261 is an apocalyptic number.

It is an amenable number.

80072946261 is a deficient number, since it is larger than the sum of its proper divisors (64127685483).

80072946261 is a wasteful number, since it uses less digits than its factorization.

80072946261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115545401 (or 115545398 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 80072946261 in words is "eighty billion, seventy-two million, nine hundred forty-six thousand, two hundred sixty-one".