2113511637650 has 48 divisors (see below), whose sum is σ = 4493669470080. Its totient is φ = 724479724800.

The previous prime is 2113511637649. The next prime is 2113511637719. The reversal of 2113511637650 is 567361153112.

It is a junction number, because it is equal to n+sod(n) for n = 2113511637598 and 2113511637607.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1031210 + ... + 2300090.

It is an arithmetic number, because the mean of its divisors is an integer number (93618113960).

Almost surely, 2^{2113511637650} is an apocalyptic number.

2113511637650 is an abundant number, since it is smaller than the sum of its proper divisors (2380157832430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2113511637650 is a wasteful number, since it uses less digits than its factorization.

2113511637650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273659 (or 1273654 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 2113511637650 in words is "two trillion, one hundred thirteen billion, five hundred eleven million, six hundred thirty-seven thousand, six hundred fifty".