2153691673057 has 4 divisors (see below), whose sum is σ = 2153694927280. Its totient is φ = 2153688418836.

The previous prime is 2153691673037. The next prime is 2153691673073. The reversal of 2153691673057 is 7503761963512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2153691673057 - 2²³ = 2153683284449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2153691672989 and 2153691673007.

It is not an unprimeable number, because it can be changed into a prime (2153691673037) 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, 240507 + ... + 2089312.

It is an arithmetic number, because the mean of its divisors is an integer number (538423731820).

Almost surely, 2^{2153691673057} is an apocalyptic number.

It is an amenable number.

2153691673057 is a deficient number, since it is larger than the sum of its proper divisors (3254223).

2153691673057 is an equidigital number, since it uses as much as digits as its factorization.

2153691673057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254222.

The product of its (nonzero) digits is 7144200, while the sum is 55.

The spelling of 2153691673057 in words is "two trillion, one hundred fifty-three billion, six hundred ninety-one million, six hundred seventy-three thousand, fifty-seven".