20838151237 has 16 divisors (see below), whose sum is σ = 21760835584. Its totient is φ = 19932318000.

The previous prime is 20838151207. The next prime is 20838151247. The reversal of 20838151237 is 73215183802.

It is a happy number.

It is not a de Polignac number, because 20838151237 - 2⁷ = 20838151109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20838151237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20838151207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1057162 + ... + 1076692.

It is an arithmetic number, because the mean of its divisors is an integer number (1360052224).

Almost surely, 2^20838151237 is an apocalyptic number.

It is an amenable number.

20838151237 is a deficient number, since it is larger than the sum of its proper divisors (922684347).

20838151237 is a wasteful number, since it uses less digits than its factorization.

20838151237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19960.

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 20838151237 in words is "twenty billion, eight hundred thirty-eight million, one hundred fifty-one thousand, two hundred thirty-seven".