20439896151 has 16 divisors (see below), whose sum is σ = 28441670400. Its totient is φ = 13032507840.

The previous prime is 20439896069. The next prime is 20439896167. The reversal of 20439896151 is 15169893402.

It is not a de Polignac number, because 20439896151 - 2¹³ = 20439887959 is a prime.

It is a super-2 number, since 2×20439896151² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20439896151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20439896951) 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, 794571 + ... + 819891.

It is an arithmetic number, because the mean of its divisors is an integer number (1777604400).

Almost surely, 2^20439896151 is an apocalyptic number.

20439896151 is a deficient number, since it is larger than the sum of its proper divisors (8001774249).

20439896151 is a wasteful number, since it uses less digits than its factorization.

20439896151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37046.

The product of its (nonzero) digits is 466560, while the sum is 48.

The spelling of 20439896151 in words is "twenty billion, four hundred thirty-nine million, eight hundred ninety-six thousand, one hundred fifty-one".