6551547624469 has 2 divisors, whose sum is σ = 6551547624470. Its totient is φ = 6551547624468.

The previous prime is 6551547624421. The next prime is 6551547624497. The reversal of 6551547624469 is 9644267451556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6302801049444 + 248746575025 = 2510538^2 + 498745^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551547624469 - 2²⁵ = 6551514070037 is a prime.

It is a super-2 number, since 2×6551547624469² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6551547624469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6551547624499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275773812234 + 3275773812235.

It is an arithmetic number, because the mean of its divisors is an integer number (3275773812235).

Almost surely, 2^{6551547624469} is an apocalyptic number.

It is an amenable number.

6551547624469 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551547624469 is an equidigital number, since it uses as much as digits as its factorization.

6551547624469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728000, while the sum is 64.

The spelling of 6551547624469 in words is "six trillion, five hundred fifty-one billion, five hundred forty-seven million, six hundred twenty-four thousand, four hundred sixty-nine".