551436077993 has 2 divisors, whose sum is σ = 551436077994. Its totient is φ = 551436077992.

The previous prime is 551436077989. The next prime is 551436078007. The reversal of 551436077993 is 399770634155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 454433729689 + 97002348304 = 674117^2 + 311452^2 .

It is a cyclic number.

It is not a de Polignac number, because 551436077993 - 2² = 551436077989 is a prime.

It is a super-2 number, since 2×551436077993² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (551436077393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275718038996 + 275718038997.

It is an arithmetic number, because the mean of its divisors is an integer number (275718038997).

Almost surely, 2^551436077993 is an apocalyptic number.

It is an amenable number.

551436077993 is a deficient number, since it is larger than the sum of its proper divisors (1).

551436077993 is an equidigital number, since it uses as much as digits as its factorization.

551436077993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21432600, while the sum is 59.

The spelling of 551436077993 in words is "five hundred fifty-one billion, four hundred thirty-six million, seventy-seven thousand, nine hundred ninety-three".