13550502399 has 16 divisors (see below), whose sum is σ = 20678288640. Its totient is φ = 7731930240.

The previous prime is 13550502389. The next prime is 13550502467. The reversal of 13550502399 is 99320505531.

It is not a de Polignac number, because 13550502399 - 2¹³ = 13550494207 is a prime.

It is a super-2 number, since 2×13550502399² (a number of 21 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 13550502399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550502379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452394 + ... + 481415.

It is an arithmetic number, because the mean of its divisors is an integer number (1292393040).

Almost surely, 2^13550502399 is an apocalyptic number.

13550502399 is a deficient number, since it is larger than the sum of its proper divisors (7127786241).

13550502399 is an equidigital number, since it uses as much as digits as its factorization.

13550502399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934510.

The product of its (nonzero) digits is 182250, while the sum is 42.

The spelling of 13550502399 in words is "thirteen billion, five hundred fifty million, five hundred two thousand, three hundred ninety-nine".