7869405553 has 6 divisors (see below), whose sum is σ = 8359541846. Its totient is φ = 7406499072.

The previous prime is 7869405547. The next prime is 7869405581. The reversal of 7869405553 is 3555049687.

It can be written as a sum of positive squares in 3 ways, for example, as 5489624464 + 2379781089 = 74092^2 + 48783^2 .

It is not a de Polignac number, because 7869405553 - 2²⁹ = 7332534641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7869405553.

It is not an unprimeable number, because it can be changed into a prime (7869405253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13614600 + ... + 13615177.

Almost surely, 2^7869405553 is an apocalyptic number.

It is an amenable number.

7869405553 is a deficient number, since it is larger than the sum of its proper divisors (490136293).

7869405553 is a wasteful number, since it uses less digits than its factorization.

7869405553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27229811 (or 27229794 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 52.

The square root of 7869405553 is about 88709.6700084044. The cubic root of 7869405553 is about 1989.0573680095.

The spelling of 7869405553 in words is "seven billion, eight hundred sixty-nine million, four hundred five thousand, five hundred fifty-three".