2155136053234 has 4 divisors (see below), whose sum is σ = 3232704079854. Its totient is φ = 1077568026616.

The previous prime is 2155136053199. The next prime is 2155136053261. The reversal of 2155136053234 is 4323506315512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2155068040225 + 68013009 = 1468015^2 + 8247^2 .

It is a super-4 number, since 4×2155136053234⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538784013307 + ... + 538784013310.

Almost surely, 2^{2155136053234} is an apocalyptic number.

2155136053234 is a deficient number, since it is larger than the sum of its proper divisors (1077568026620).

2155136053234 is a wasteful number, since it uses less digits than its factorization.

2155136053234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077568026619.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 2155136053234 in words is "two trillion, one hundred fifty-five billion, one hundred thirty-six million, fifty-three thousand, two hundred thirty-four".