2251364351655 has 48 divisors (see below), whose sum is σ = 3758985993312. Its totient is φ = 1150488864000.

The previous prime is 2251364351641. The next prime is 2251364351657. The reversal of 2251364351655 is 5561534631522.

It is not a de Polignac number, because 2251364351655 - 2⁶ = 2251364351591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251364351657) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 682737 + ... + 2229093.

It is an arithmetic number, because the mean of its divisors is an integer number (78312208194).

Almost surely, 2^{2251364351655} is an apocalyptic number.

2251364351655 is a deficient number, since it is larger than the sum of its proper divisors (1507621641657).

2251364351655 is a wasteful number, since it uses less digits than its factorization.

2251364351655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546528 (or 1546497 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 48.

The spelling of 2251364351655 in words is "two trillion, two hundred fifty-one billion, three hundred sixty-four million, three hundred fifty-one thousand, six hundred fifty-five".