20335451137 has 8 divisors (see below), whose sum is σ = 21112626600. Its totient is φ = 19563339264.

The previous prime is 20335451107. The next prime is 20335451161. The reversal of 20335451137 is 73115453302.

It can be written as a sum of positive squares in 4 ways, for example, as 4989444496 + 15346006641 = 70636^2 + 123879^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20335451137 - 2⁷ = 20335451009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20335451107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257712 + ... + 1273777.

It is an arithmetic number, because the mean of its divisors is an integer number (2639078325).

Almost surely, 2^20335451137 is an apocalyptic number.

It is an amenable number.

20335451137 is a deficient number, since it is larger than the sum of its proper divisors (777175463).

20335451137 is a wasteful number, since it uses less digits than its factorization.

20335451137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531795.

The product of its (nonzero) digits is 37800, while the sum is 34.

The spelling of 20335451137 in words is "twenty billion, three hundred thirty-five million, four hundred fifty-one thousand, one hundred thirty-seven".