2161462521253 has 16 divisors (see below), whose sum is σ = 2473535672320. Its totient is φ = 1850213108016.

The previous prime is 2161462521227. The next prime is 2161462521307. The reversal of 2161462521253 is 3521252641612.

It is a de Polignac number, because none of the positive numbers 2^k-2161462521253 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 (2161462527253) 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, 66045028 + ... + 66077746.

It is an arithmetic number, because the mean of its divisors is an integer number (154595979520).

Almost surely, 2^{2161462521253} is an apocalyptic number.

It is an amenable number.

2161462521253 is a deficient number, since it is larger than the sum of its proper divisors (312073151067).

2161462521253 is a wasteful number, since it uses less digits than its factorization.

2161462521253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45016.

The product of its digits is 172800, while the sum is 40.

The spelling of 2161462521253 in words is "two trillion, one hundred sixty-one billion, four hundred sixty-two million, five hundred twenty-one thousand, two hundred fifty-three".