47172173736864 has 96 divisors (see below), whose sum is σ = 136279385613504. Its totient is φ = 14168097198080.

The previous prime is 47172173736823. The next prime is 47172173736917. The reversal of 47172173736864 is 46863737127174.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 47172173736795 and 47172173736804.

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, 197538279 + ... + 197776934.

It is an arithmetic number, because the mean of its divisors is an integer number (1419576933474).

Almost surely, 2^{47172173736864} is an apocalyptic number.

47172173736864 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

47172173736864 is an abundant number, since it is smaller than the sum of its proper divisors (89107211876640).

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

47172173736864 is a wasteful number, since it uses less digits than its factorization.

47172173736864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395315350 (or 395315342 counting only the distinct ones).

The product of its digits is 199148544, while the sum is 66.

The spelling of 47172173736864 in words is "forty-seven trillion, one hundred seventy-two billion, one hundred seventy-three million, seven hundred thirty-six thousand, eight hundred sixty-four".