2151125105505 has 64 divisors (see below), whose sum is σ = 3562272000000. Its totient is φ = 1107606804480.

The previous prime is 2151125105489. The next prime is 2151125105513. The reversal of 2151125105505 is 5055015211512.

It is not a de Polignac number, because 2151125105505 - 2⁴ = 2151125105489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 81937621 + ... + 81963869.

It is an arithmetic number, because the mean of its divisors is an integer number (55660500000).

Almost surely, 2^{2151125105505} is an apocalyptic number.

It is an amenable number.

2151125105505 is a deficient number, since it is larger than the sum of its proper divisors (1411146894495).

2151125105505 is a wasteful number, since it uses less digits than its factorization.

2151125105505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27434.

The product of its (nonzero) digits is 12500, while the sum is 33.

The spelling of 2151125105505 in words is "two trillion, one hundred fifty-one billion, one hundred twenty-five million, one hundred five thousand, five hundred five".