45642138380 has 48 divisors (see below), whose sum is σ = 96204792096. Its totient is φ = 18189081600.

The previous prime is 45642138379. The next prime is 45642138427. The reversal of 45642138380 is 8383124654.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12330530 + ... + 12334230.

It is an arithmetic number, because the mean of its divisors is an integer number (2004266502).

Almost surely, 2^45642138380 is an apocalyptic number.

It is an amenable number.

45642138380 is an abundant number, since it is smaller than the sum of its proper divisors (50562653716).

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

45642138380 is a wasteful number, since it uses less digits than its factorization.

45642138380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834 (or 5832 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 45642138380 in words is "forty-five billion, six hundred forty-two million, one hundred thirty-eight thousand, three hundred eighty".