2153061870961 has 4 divisors (see below), whose sum is σ = 2153083700800. Its totient is φ = 2153040041124.

The previous prime is 2153061870919. The next prime is 2153061870977. The reversal of 2153061870961 is 1690781603512.

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 2153061870961 - 2¹³ = 2153061862769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153061870161) 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, 10766301 + ... + 10964458.

It is an arithmetic number, because the mean of its divisors is an integer number (538270925200).

Almost surely, 2^{2153061870961} is an apocalyptic number.

It is an amenable number.

2153061870961 is a deficient number, since it is larger than the sum of its proper divisors (21829839).

2153061870961 is an equidigital number, since it uses as much as digits as its factorization.

2153061870961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21829838.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 2153061870961 in words is "two trillion, one hundred fifty-three billion, sixty-one million, eight hundred seventy thousand, nine hundred sixty-one".