161036251262 has 4 divisors (see below), whose sum is σ = 241554376896. Its totient is φ = 80518125630.

The previous prime is 161036251253. The next prime is 161036251301. The reversal of 161036251262 is 262152630161.

161036251262 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 262152630161 = 61 ⋅4297584101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40259062814 + ... + 40259062817.

It is an arithmetic number, because the mean of its divisors is an integer number (60388594224).

Almost surely, 2^161036251262 is an apocalyptic number.

161036251262 is a deficient number, since it is larger than the sum of its proper divisors (80518125634).

161036251262 is an equidigital number, since it uses as much as digits as its factorization.

161036251262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80518125633.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 161036251262 in words is "one hundred sixty-one billion, thirty-six million, two hundred fifty-one thousand, two hundred sixty-two".