551978651139 has 16 divisors (see below), whose sum is σ = 765214607520. Its totient is φ = 353493056000.

The previous prime is 551978651087. The next prime is 551978651141. The reversal of 551978651139 is 931156879155.

It is a cyclic number.

It is not a de Polignac number, because 551978651139 - 2¹¹ = 551978649091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551978651179) 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, 16085862 + ... + 16120139.

It is an arithmetic number, because the mean of its divisors is an integer number (47825912970).

Almost surely, 2^551978651139 is an apocalyptic number.

551978651139 is a deficient number, since it is larger than the sum of its proper divisors (213235956381).

551978651139 is a wasteful number, since it uses less digits than its factorization.

551978651139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32206230.

The product of its digits is 10206000, while the sum is 60.

The spelling of 551978651139 in words is "five hundred fifty-one billion, nine hundred seventy-eight million, six hundred fifty-one thousand, one hundred thirty-nine".