20920681298 has 32 divisors (see below), whose sum is σ = 34529476608. Its totient is φ = 9427395600.

The previous prime is 20920681259. The next prime is 20920681337. The reversal of 20920681298 is 89218602902.

It is an interprime number because it is at equal distance from previous prime (20920681259) and next prime (20920681337).

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, 5896361 + ... + 5899907.

It is an arithmetic number, because the mean of its divisors is an integer number (1079046144).

Almost surely, 2^20920681298 is an apocalyptic number.

20920681298 is a deficient number, since it is larger than the sum of its proper divisors (13608795310).

20920681298 is a wasteful number, since it uses less digits than its factorization.

20920681298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5798.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 20920681298 in words is "twenty billion, nine hundred twenty million, six hundred eighty-one thousand, two hundred ninety-eight".