15515553153145 has 32 divisors (see below), whose sum is σ = 19192123843200. Its totient is φ = 12034423425024.

The previous prime is 15515553153073. The next prime is 15515553153179. The reversal of 15515553153145 is 54135135551551.

It is a cyclic number.

It is not a de Polignac number, because 15515553153145 - 2¹⁵ = 15515553120377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180133609 + ... + 180219721.

It is an arithmetic number, because the mean of its divisors is an integer number (599753870100).

Almost surely, 2^{15515553153145} is an apocalyptic number.

It is an amenable number.

15515553153145 is a deficient number, since it is larger than the sum of its proper divisors (3676570690055).

15515553153145 is a wasteful number, since it uses less digits than its factorization.

15515553153145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92329.

The product of its digits is 2812500, while the sum is 49.

The spelling of 15515553153145 in words is "fifteen trillion, five hundred fifteen billion, five hundred fifty-three million, one hundred fifty-three thousand, one hundred forty-five".