2115656253133 has 4 divisors (see below), whose sum is σ = 2115775469500. Its totient is φ = 2115537036768.

The previous prime is 2115656253119. The next prime is 2115656253209. The reversal of 2115656253133 is 3313526565112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1209784409604 + 905871843529 = 1099902^2 + 951773^2 .

It is a cyclic number.

It is not a de Polignac number, because 2115656253133 - 2²¹ = 2115654155981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2115656253133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115656253833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59581560 + ... + 59617057.

It is an arithmetic number, because the mean of its divisors is an integer number (528943867375).

Almost surely, 2^{2115656253133} is an apocalyptic number.

It is an amenable number.

2115656253133 is a deficient number, since it is larger than the sum of its proper divisors (119216367).

2115656253133 is a wasteful number, since it uses less digits than its factorization.

2115656253133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119216366.

The product of its digits is 486000, while the sum is 43.

The spelling of 2115656253133 in words is "two trillion, one hundred fifteen billion, six hundred fifty-six million, two hundred fifty-three thousand, one hundred thirty-three".