20890055334 has 32 divisors (see below), whose sum is σ = 42335001216. Its totient is φ = 6871377920.

The previous prime is 20890055327. The next prime is 20890055341. The reversal of 20890055334 is 43355009802.

It is an interprime number because it is at equal distance from previous prime (20890055327) and next prime (20890055341).

It is a junction number, because it is equal to n+sod(n) for n = 20890055292 and 20890055301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101689 + ... + 228299.

It is an arithmetic number, because the mean of its divisors is an integer number (1322968788).

Almost surely, 2^20890055334 is an apocalyptic number.

20890055334 is an abundant number, since it is smaller than the sum of its proper divisors (21444945882).

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

20890055334 is a wasteful number, since it uses less digits than its factorization.

20890055334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126980.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 20890055334 in words is "twenty billion, eight hundred ninety million, fifty-five thousand, three hundred thirty-four".