2115653861763 has 24 divisors (see below), whose sum is σ = 3291224122368. Its totient is φ = 1301858946432.

The previous prime is 2115653861747. The next prime is 2115653861767. The reversal of 2115653861763 is 3671683565112.

2115653861763 is a `hidden beast` number, since 2 + 1 + 1 + 565 + 3 + 8 + 6 + 1 + 76 + 3 = 666.

It is not a de Polignac number, because 2115653861763 - 2⁴ = 2115653861747 is a prime.

It is a super-2 number, since 2×2115653861763² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2115653861767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1326231 + ... + 2447487.

It is an arithmetic number, because the mean of its divisors is an integer number (137134338432).

Almost surely, 2^{2115653861763} is an apocalyptic number.

2115653861763 is a deficient number, since it is larger than the sum of its proper divisors (1175570260605).

2115653861763 is a wasteful number, since it uses less digits than its factorization.

2115653861763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137403 (or 1137400 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 2115653861763 in words is "two trillion, one hundred fifteen billion, six hundred fifty-three million, eight hundred sixty-one thousand, seven hundred sixty-three".