47776261621 has 16 divisors (see below), whose sum is σ = 52486659648. Its totient is φ = 43127884800.

The previous prime is 47776261607. The next prime is 47776261649. The reversal of 47776261621 is 12616267774.

It is not a de Polignac number, because 47776261621 - 2²⁵ = 47742707189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47776264621) 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, 1140711 + ... + 1181851.

It is an arithmetic number, because the mean of its divisors is an integer number (3280416228).

Almost surely, 2^47776261621 is an apocalyptic number.

It is an amenable number.

47776261621 is a deficient number, since it is larger than the sum of its proper divisors (4710398027).

47776261621 is a wasteful number, since it uses less digits than its factorization.

47776261621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41892.

The product of its digits is 1185408, while the sum is 49.

The spelling of 47776261621 in words is "forty-seven billion, seven hundred seventy-six million, two hundred sixty-one thousand, six hundred twenty-one".