20552503672 has 8 divisors (see below), whose sum is σ = 38535944400. Its totient is φ = 10276251832.

The previous prime is 20552503649. The next prime is 20552503679. The reversal of 20552503672 is 27630525502.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552503679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284531472 + ... + 1284531487.

It is an arithmetic number, because the mean of its divisors is an integer number (4816993050).

Almost surely, 2^20552503672 is an apocalyptic number.

It is an amenable number.

20552503672 is a deficient number, since it is larger than the sum of its proper divisors (17983440728).

20552503672 is a wasteful number, since it uses less digits than its factorization.

20552503672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569062965 (or 2569062961 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 20552503672 in words is "twenty billion, five hundred fifty-two million, five hundred three thousand, six hundred seventy-two".