2151101510555 has 16 divisors (see below), whose sum is σ = 2639375431680. Its totient is φ = 1682601774048.

The previous prime is 2151101510543. The next prime is 2151101510557. The reversal of 2151101510555 is 5550151011512.

It is a cyclic number.

It is not a de Polignac number, because 2151101510555 - 2¹⁸ = 2151101248411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2151101510557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26395367 + ... + 26476736.

It is an arithmetic number, because the mean of its divisors is an integer number (164960964480).

Almost surely, 2^{2151101510555} is an apocalyptic number.

2151101510555 is a deficient number, since it is larger than the sum of its proper divisors (488273921125).

2151101510555 is a wasteful number, since it uses less digits than its factorization.

2151101510555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52872290.

The product of its (nonzero) digits is 6250, while the sum is 32.

The spelling of 2151101510555 in words is "two trillion, one hundred fifty-one billion, one hundred one million, five hundred ten thousand, five hundred fifty-five".