20606365554 has 16 divisors (see below), whose sum is σ = 41225263200. Its totient is φ = 6866699840.

The previous prime is 20606365537. The next prime is 20606365561. The reversal of 20606365554 is 45556360602.

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, 500727 + ... + 540314.

It is an arithmetic number, because the mean of its divisors is an integer number (2576578950).

Almost surely, 2^20606365554 is an apocalyptic number.

20606365554 is an abundant number, since it is smaller than the sum of its proper divisors (20618897646).

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

20606365554 is a wasteful number, since it uses less digits than its factorization.

20606365554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044345.

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 20606365554 in words is "twenty billion, six hundred six million, three hundred sixty-five thousand, five hundred fifty-four".