2251515214406 has 16 divisors (see below), whose sum is σ = 3379911972864. Its totient is φ = 1124878212864.

The previous prime is 2251515214391. The next prime is 2251515214411. The reversal of 2251515214406 is 6044125151522.

It is a super-2 number, since 2×2251515214406² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2251515214406.

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, 14375936 + ... + 14531708.

It is an arithmetic number, because the mean of its divisors is an integer number (211244498304).

Almost surely, 2^{2251515214406} is an apocalyptic number.

2251515214406 is a deficient number, since it is larger than the sum of its proper divisors (1128396758458).

2251515214406 is a wasteful number, since it uses less digits than its factorization.

2251515214406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161375.

The product of its (nonzero) digits is 96000, while the sum is 38.

The spelling of 2251515214406 in words is "two trillion, two hundred fifty-one billion, five hundred fifteen million, two hundred fourteen thousand, four hundred six".