45156431412 has 18 divisors (see below), whose sum is σ = 114145423938. Its totient is φ = 15052143792.

The previous prime is 45156431399. The next prime is 45156431413. The reversal of 45156431412 is 21413465154.

45156431412 is a `hidden beast` number, since 4 + 5 + 1 + 5 + 643 + 1 + 4 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28779086736 + 16377344676 = 169644^2 + 127974^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1254345317 = 45156431412 / (4 + 5 + 1 + 5 + 6 + 4 + 3 + 1 + 4 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45156431413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 627172623 + ... + 627172694.

It is an arithmetic number, because the mean of its divisors is an integer number (6341412441).

Almost surely, 2^45156431412 is an apocalyptic number.

It is an amenable number.

45156431412 is an abundant number, since it is smaller than the sum of its proper divisors (68988992526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45156431412 is a wasteful number, since it uses less digits than its factorization.

45156431412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254345327 (or 1254345322 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 45156431412 its reverse (21413465154), we get a palindrome (66569896566).

The spelling of 45156431412 in words is "forty-five billion, one hundred fifty-six million, four hundred thirty-one thousand, four hundred twelve".