15555152123 has 16 divisors (see below), whose sum is σ = 18724523520. Its totient is φ = 12623449536.

The previous prime is 15555152113. The next prime is 15555152143. The reversal of 15555152123 is 32125155551.

It is a cyclic number.

It is not a de Polignac number, because 15555152123 - 2⁶ = 15555152059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15555152113) 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, 185090 + ... + 255672.

It is an arithmetic number, because the mean of its divisors is an integer number (1170282720).

Almost surely, 2^15555152123 is an apocalyptic number.

15555152123 is a deficient number, since it is larger than the sum of its proper divisors (3169371397).

15555152123 is a wasteful number, since it uses less digits than its factorization.

15555152123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72266.

The product of its digits is 37500, while the sum is 35.

The spelling of 15555152123 in words is "fifteen billion, five hundred fifty-five million, one hundred fifty-two thousand, one hundred twenty-three".