2251036721094 has 16 divisors (see below), whose sum is σ = 5145226791168. Its totient is φ = 643153348872.

The previous prime is 2251036721077. The next prime is 2251036721117. The reversal of 2251036721094 is 4901276301522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 53596112407 = 2251036721094 / (2 + 2 + 5 + 1 + 0 + 3 + 6 + 7 + 2 + 1 + 0 + 9 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26798056162 + ... + 26798056245.

It is an arithmetic number, because the mean of its divisors is an integer number (321576674448).

Almost surely, 2^{2251036721094} is an apocalyptic number.

2251036721094 is an abundant number, since it is smaller than the sum of its proper divisors (2894190070074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251036721094 is a wasteful number, since it uses less digits than its factorization.

2251036721094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53596112419.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 2251036721094 in words is "two trillion, two hundred fifty-one billion, thirty-six million, seven hundred twenty-one thousand, ninety-four".