15955930551 has 32 divisors (see below), whose sum is σ = 23360970240. Its totient is φ = 9607001600.

The previous prime is 15955930537. The next prime is 15955930597. The reversal of 15955930551 is 15503955951.

It is a cyclic number.

It is not a de Polignac number, because 15955930551 - 2¹⁰ = 15955929527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15955930551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15955930511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3326611 + ... + 3331403.

It is an arithmetic number, because the mean of its divisors is an integer number (730030320).

Almost surely, 2^15955930551 is an apocalyptic number.

15955930551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15955930551 is a deficient number, since it is larger than the sum of its proper divisors (7405039689).

15955930551 is a wasteful number, since it uses less digits than its factorization.

15955930551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447.

The product of its (nonzero) digits is 759375, while the sum is 48.

The spelling of 15955930551 in words is "fifteen billion, nine hundred fifty-five million, nine hundred thirty thousand, five hundred fifty-one".