20910796416 has 96 divisors (see below), whose sum is σ = 63712642500. Its totient is φ = 6560243712.

The previous prime is 20910796397. The next prime is 20910796429. The reversal of 20910796416 is 61469701902.

It can be written as a sum of positive squares in 2 ways, for example, as 20591102016 + 319694400 = 143496^2 + 17880^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×20910796416² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514291 + ... + 553458.

Almost surely, 2^20910796416 is an apocalyptic number.

It is an amenable number.

20910796416 is an abundant number, since it is smaller than the sum of its proper divisors (42801846084).

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

20910796416 is a wasteful number, since it uses less digits than its factorization.

20910796416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067786 (or 1067771 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 20910796416 in words is "twenty billion, nine hundred ten million, seven hundred ninety-six thousand, four hundred sixteen".