20554346616 has 32 divisors (see below), whose sum is σ = 52089786960. Its totient is φ = 6757592832.

The previous prime is 20554346591. The next prime is 20554346647. The reversal of 20554346616 is 61664345502.

It is a congruent number.

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, 5864215 + ... + 5867718.

Almost surely, 2^20554346616 is an apocalyptic number.

It is an amenable number.

20554346616 is an abundant number, since it is smaller than the sum of its proper divisors (31535440344).

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

20554346616 is a wasteful number, since it uses less digits than its factorization.

20554346616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11732015 (or 11732011 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 20554346616 in words is "twenty billion, five hundred fifty-four million, three hundred forty-six thousand, six hundred sixteen".