20926496552 has 16 divisors (see below), whose sum is σ = 42255425940. Its totient is φ = 9658382976.

The previous prime is 20926496537. The next prime is 20926496561. The reversal of 20926496552 is 25569462902.

It can be written as a sum of positive squares in 2 ways, for example, as 20550369316 + 376127236 = 143354^2 + 19394^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20926496552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100608053 + ... + 100608260.

Almost surely, 2^20926496552 is an apocalyptic number.

It is an amenable number.

20926496552 is an abundant number, since it is smaller than the sum of its proper divisors (21328929388).

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

20926496552 is a wasteful number, since it uses less digits than its factorization.

20926496552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201216332 (or 201216328 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 20926496552 in words is "twenty billion, nine hundred twenty-six million, four hundred ninety-six thousand, five hundred fifty-two".