2177973492331 has 48 divisors (see below), whose sum is σ = 2801650971168. Its totient is φ = 1677199910400.

The previous prime is 2177973492307. The next prime is 2177973492397. The reversal of 2177973492331 is 1332943797712.

It is a happy number.

It is not a de Polignac number, because 2177973492331 - 2²¹ = 2177971395179 is a prime.

It is a super-2 number, since 2×2177973492331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2177973492731) 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, 10896216 + ... + 11094298.

It is an arithmetic number, because the mean of its divisors is an integer number (58367728566).

Almost surely, 2^{2177973492331} is an apocalyptic number.

2177973492331 is a deficient number, since it is larger than the sum of its proper divisors (623677478837).

2177973492331 is a wasteful number, since it uses less digits than its factorization.

2177973492331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198572 (or 198565 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 58.

The spelling of 2177973492331 in words is "two trillion, one hundred seventy-seven billion, nine hundred seventy-three million, four hundred ninety-two thousand, three hundred thirty-one".