45156312123 has 16 divisors (see below), whose sum is σ = 64919828736. Its totient is φ = 27754215840.

The previous prime is 45156312109. The next prime is 45156312139. The reversal of 45156312123 is 32121365154.

It is not a de Polignac number, because 45156312123 - 2⁴ = 45156312107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45156352123) 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, 682215 + ... + 745472.

It is an arithmetic number, because the mean of its divisors is an integer number (4057489296).

Almost surely, 2^45156312123 is an apocalyptic number.

45156312123 is a deficient number, since it is larger than the sum of its proper divisors (19763516613).

45156312123 is a wasteful number, since it uses less digits than its factorization.

45156312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428514.

The product of its digits is 21600, while the sum is 33.

Adding to 45156312123 its reverse (32121365154), we get a palindrome (77277677277).

The spelling of 45156312123 in words is "forty-five billion, one hundred fifty-six million, three hundred twelve thousand, one hundred twenty-three".