20553678370 has 96 divisors (see below), whose sum is σ = 40682528640. Its totient is φ = 7460006400.

The previous prime is 20553678359. The next prime is 20553678449. The reversal of 20553678370 is 7387635502.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 20553678370.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11411470 + ... + 11413270.

It is an arithmetic number, because the mean of its divisors is an integer number (423776340).

Almost surely, 2^20553678370 is an apocalyptic number.

20553678370 is a deficient number, since it is larger than the sum of its proper divisors (20128850270).

20553678370 is a wasteful number, since it uses less digits than its factorization.

20553678370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948 (or 1919 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 20553678370 in words is "twenty billion, five hundred fifty-three million, six hundred seventy-eight thousand, three hundred seventy".