20151268879 has 8 divisors (see below), whose sum is σ = 23163144480. Its totient is φ = 17172674016.

The previous prime is 20151268877. The next prime is 20151268909. The reversal of 20151268879 is 97886215102.

It is a happy number.

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 20151268879 - 2¹ = 20151268877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20151268877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8318884 + ... + 8321305.

It is an arithmetic number, because the mean of its divisors is an integer number (2895393060).

Almost surely, 2^20151268879 is an apocalyptic number.

20151268879 is a deficient number, since it is larger than the sum of its proper divisors (3011875601).

20151268879 is a wasteful number, since it uses less digits than its factorization.

20151268879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16640369.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 20151268879 in words is "twenty billion, one hundred fifty-one million, two hundred sixty-eight thousand, eight hundred seventy-nine".