12162570251555 has 32 divisors (see below), whose sum is σ = 15516281877120. Its totient is φ = 9120598466560.

The previous prime is 12162570251551. The next prime is 12162570251593. The reversal of 12162570251555 is 55515207526121.

It is not a de Polignac number, because 12162570251555 - 2² = 12162570251551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12162570251551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48576647 + ... + 48826383.

It is an arithmetic number, because the mean of its divisors is an integer number (484883808660).

Almost surely, 2^{12162570251555} is an apocalyptic number.

12162570251555 is a deficient number, since it is larger than the sum of its proper divisors (3353711625565).

12162570251555 is a wasteful number, since it uses less digits than its factorization.

12162570251555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252079.

The product of its (nonzero) digits is 1050000, while the sum is 47.

Adding to 12162570251555 its reverse (55515207526121), we get a palindrome (67677777777676).

The spelling of 12162570251555 in words is "twelve trillion, one hundred sixty-two billion, five hundred seventy million, two hundred fifty-one thousand, five hundred fifty-five".