2155652661545 has 16 divisors (see below), whose sum is σ = 2590558763520. Its totient is φ = 1722005486784.

The previous prime is 2155652661497. The next prime is 2155652661577. The reversal of 2155652661545 is 5451662565512.

It is a cyclic number.

It is not a de Polignac number, because 2155652661545 - 2³⁰ = 2154578919721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71808959 + ... + 71838971.

It is an arithmetic number, because the mean of its divisors is an integer number (161909922720).

Almost surely, 2^{2155652661545} is an apocalyptic number.

It is an amenable number.

2155652661545 is a deficient number, since it is larger than the sum of its proper divisors (434906101975).

2155652661545 is a wasteful number, since it uses less digits than its factorization.

2155652661545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50504.

The product of its digits is 10800000, while the sum is 53.

The spelling of 2155652661545 in words is "two trillion, one hundred fifty-five billion, six hundred fifty-two million, six hundred sixty-one thousand, five hundred forty-five".