2251400503164 has 12 divisors (see below), whose sum is σ = 5253267840744. Its totient is φ = 750466834384.

The previous prime is 2251400503147. The next prime is 2251400503207. The reversal of 2251400503164 is 4613050041522.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2251400503164² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93808354287 + ... + 93808354310.

It is an arithmetic number, because the mean of its divisors is an integer number (437772320062).

Almost surely, 2^{2251400503164} is an apocalyptic number.

It is an amenable number.

2251400503164 is an abundant number, since it is smaller than the sum of its proper divisors (3001867337580).

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

2251400503164 is a wasteful number, since it uses less digits than its factorization.

2251400503164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187616708604 (or 187616708602 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 2251400503164 its reverse (4613050041522), we get a palindrome (6864450544686).

The spelling of 2251400503164 in words is "two trillion, two hundred fifty-one billion, four hundred million, five hundred three thousand, one hundred sixty-four".