45871891872 has 48 divisors (see below), whose sum is σ = 120425880960. Its totient is φ = 15289085952.

The previous prime is 45871891837. The next prime is 45871891883. The reversal of 45871891872 is 27819817854.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317504 + ... + 1351872.

It is an arithmetic number, because the mean of its divisors is an integer number (2508872520).

Almost surely, 2^45871891872 is an apocalyptic number.

It is an amenable number.

45871891872 is an abundant number, since it is smaller than the sum of its proper divisors (74553989088).

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

45871891872 is a wasteful number, since it uses less digits than its factorization.

45871891872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48285 (or 48277 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 60.

The spelling of 45871891872 in words is "forty-five billion, eight hundred seventy-one million, eight hundred ninety-one thousand, eight hundred seventy-two".