20456698530 has 16 divisors (see below), whose sum is σ = 49096076544. Its totient is φ = 5455119600.

The previous prime is 20456698511. The next prime is 20456698573. The reversal of 20456698530 is 3589665402.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20456698530.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340944946 + ... + 340945005.

It is an arithmetic number, because the mean of its divisors is an integer number (3068504784).

Almost surely, 2^20456698530 is an apocalyptic number.

20456698530 is an abundant number, since it is smaller than the sum of its proper divisors (28639378014).

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

20456698530 is a wasteful number, since it uses less digits than its factorization.

20456698530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681889961.

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 20456698530 in words is "twenty billion, four hundred fifty-six million, six hundred ninety-eight thousand, five hundred thirty".