551436077989 has 2 divisors, whose sum is σ = 551436077990. Its totient is φ = 551436077988.

The previous prime is 551436077947. The next prime is 551436077993. The reversal of 551436077989 is 989770634155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 549945345889 + 1490732100 = 741583^2 + 38610^2 .

It is a cyclic number.

It is not a de Polignac number, because 551436077989 - 2¹¹ = 551436075941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 551436077989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551436057989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275718038994 + 275718038995.

It is an arithmetic number, because the mean of its divisors is an integer number (275718038995).

Almost surely, 2^551436077989 is an apocalyptic number.

It is an amenable number.

551436077989 is a deficient number, since it is larger than the sum of its proper divisors (1).

551436077989 is an equidigital number, since it uses as much as digits as its factorization.

551436077989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57153600, while the sum is 64.

The spelling of 551436077989 in words is "five hundred fifty-one billion, four hundred thirty-six million, seventy-seven thousand, nine hundred eighty-nine".