2153662140631 has 4 divisors (see below), whose sum is σ = 2174985528264. Its totient is φ = 2132338753000.

The previous prime is 2153662140589. The next prime is 2153662140647. The reversal of 2153662140631 is 1360412663512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2153662140631 is a prime.

It is a super-2 number, since 2×2153662140631² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2153662140731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10661693665 + ... + 10661693866.

It is an arithmetic number, because the mean of its divisors is an integer number (543746382066).

Almost surely, 2^{2153662140631} is an apocalyptic number.

2153662140631 is a deficient number, since it is larger than the sum of its proper divisors (21323387633).

2153662140631 is a wasteful number, since it uses less digits than its factorization.

2153662140631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21323387632.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 2153662140631 in words is "two trillion, one hundred fifty-three billion, six hundred sixty-two million, one hundred forty thousand, six hundred thirty-one".