551978651087 has 2 divisors, whose sum is σ = 551978651088. Its totient is φ = 551978651086.

The previous prime is 551978651071. The next prime is 551978651141. The reversal of 551978651087 is 780156879155.

551978651087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551978651087 - 2⁴ = 551978651071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551978651017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275989325543 + 275989325544.

It is an arithmetic number, because the mean of its divisors is an integer number (275989325544).

Almost surely, 2^551978651087 is an apocalyptic number.

551978651087 is a deficient number, since it is larger than the sum of its proper divisors (1).

551978651087 is an equidigital number, since it uses as much as digits as its factorization.

551978651087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168000, while the sum is 62.

The spelling of 551978651087 in words is "five hundred fifty-one billion, nine hundred seventy-eight million, six hundred fifty-one thousand, eighty-seven".