45781538000 has 80 divisors (see below), whose sum is σ = 120763431360. Its totient is φ = 16647824000.

The previous prime is 45781537993. The next prime is 45781538029. The reversal of 45781538000 is 83518754.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 1018490 + ... + 1062489.

It is an arithmetic number, because the mean of its divisors is an integer number (1509542892).

Almost surely, 2^45781538000 is an apocalyptic number.

45781538000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45781538000 is an abundant number, since it is smaller than the sum of its proper divisors (74981893360).

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

45781538000 is a wasteful number, since it uses less digits than its factorization.

45781538000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081013 (or 2080997 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 45781538000 in words is "forty-five billion, seven hundred eighty-one million, five hundred thirty-eight thousand".