15605660145 has 32 divisors (see below), whose sum is σ = 25049606400. Its totient is φ = 8296221440.

The previous prime is 15605660129. The next prime is 15605660171. The reversal of 15605660145 is 54106650651.

It is not a de Polignac number, because 15605660145 - 2⁴ = 15605660129 is a prime.

It is a super-2 number, since 2×15605660145² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9532267 + ... + 9533903.

It is an arithmetic number, because the mean of its divisors is an integer number (782800200).

Almost surely, 2^15605660145 is an apocalyptic number.

15605660145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15605660145 is a deficient number, since it is larger than the sum of its proper divisors (9443946255).

15605660145 is a wasteful number, since it uses less digits than its factorization.

15605660145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 15605660145 in words is "fifteen billion, six hundred five million, six hundred sixty thousand, one hundred forty-five".