20890554162 has 16 divisors (see below), whose sum is σ = 41864844000. Its totient is φ = 6949562112.

The previous prime is 20890554143. The next prime is 20890554187. The reversal of 20890554162 is 26145509802.

It is a super-3 number, since 3×20890554162³ (a number of 32 digits) contains 333 as substring.

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, 3485743 + ... + 3491730.

It is an arithmetic number, because the mean of its divisors is an integer number (2616552750).

Almost surely, 2^20890554162 is an apocalyptic number.

20890554162 is an abundant number, since it is smaller than the sum of its proper divisors (20974289838).

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

20890554162 is a wasteful number, since it uses less digits than its factorization.

20890554162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6977977.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 20890554162 in words is "twenty billion, eight hundred ninety million, five hundred fifty-four thousand, one hundred sixty-two".