15214531145 has 32 divisors (see below), whose sum is σ = 20636605440. Its totient is φ = 10666656000.

The previous prime is 15214531133. The next prime is 15214531147. The reversal of 15214531145 is 54113541251.

15214531145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15214531145 - 2⁶ = 15214531081 is a prime.

It is a super-2 number, since 2×15214531145² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15214531147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1047080 + ... + 1061510.

It is an arithmetic number, because the mean of its divisors is an integer number (644893920).

Almost surely, 2^15214531145 is an apocalyptic number.

It is an amenable number.

15214531145 is a deficient number, since it is larger than the sum of its proper divisors (5422074295).

15214531145 is a wasteful number, since it uses less digits than its factorization.

15214531145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15137.

The product of its digits is 12000, while the sum is 32.

The spelling of 15214531145 in words is "fifteen billion, two hundred fourteen million, five hundred thirty-one thousand, one hundred forty-five".