45018169812 has 144 divisors (see below), whose sum is σ = 150221215872. Its totient is φ = 11005194240.

The previous prime is 45018169811. The next prime is 45018169817. The reversal of 45018169812 is 21896181054.

It is a happy number.

45018169812 is a `hidden beast` number, since 4 + 501 + 8 + 1 + 69 + 81 + 2 = 666.

45018169812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×45018169812² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45018169811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 430533 + ... + 524780.

It is an arithmetic number, because the mean of its divisors is an integer number (1043202888).

Almost surely, 2^45018169812 is an apocalyptic number.

45018169812 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

45018169812 is an abundant number, since it is smaller than the sum of its proper divisors (105203046060).

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

45018169812 is a wasteful number, since it uses less digits than its factorization.

45018169812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955358 (or 955353 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 45018169812 in words is "forty-five billion, eighteen million, one hundred sixty-nine thousand, eight hundred twelve".