45139648512 has 112 divisors (see below), whose sum is σ = 137560580352. Its totient is φ = 12896993280.

The previous prime is 45139648511. The next prime is 45139648529. The reversal of 45139648512 is 21584693154.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45139648511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40837 + ... + 303227.

Almost surely, 2^45139648512 is an apocalyptic number.

45139648512 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45139648512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68780290176).

45139648512 is an abundant number, since it is smaller than the sum of its proper divisors (92420931840).

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

45139648512 is an equidigital number, since it uses as much as digits as its factorization.

45139648512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262427 (or 262403 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 48.

The spelling of 45139648512 in words is "forty-five billion, one hundred thirty-nine million, six hundred forty-eight thousand, five hundred twelve".