15655350401 has 6 divisors (see below), whose sum is σ = 16213806102. Its totient is φ = 15115509920.

The previous prime is 15655350397. The next prime is 15655350421. The reversal of 15655350401 is 10405355651.

It can be written as a sum of positive squares in 3 ways, for example, as 4408960000 + 11246390401 = 66400^2 + 106049^2 .

It is not a de Polignac number, because 15655350401 - 2² = 15655350397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15655350421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9306740 + ... + 9308421.

It is an arithmetic number, because the mean of its divisors is an integer number (2702301017).

Almost surely, 2^15655350401 is an apocalyptic number.

It is an amenable number.

15655350401 is a deficient number, since it is larger than the sum of its proper divisors (558455701).

15655350401 is an equidigital number, since it uses as much as digits as its factorization.

15655350401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18615219 (or 18615190 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 15655350401 in words is "fifteen billion, six hundred fifty-five million, three hundred fifty thousand, four hundred one".