501171464640 has 1792 divisors, whose sum is σ = 2203183742976. Its totient is φ = 93428121600.

The previous prime is 501171464627. The next prime is 501171464653. The reversal of 501171464640 is 46464171105.

It is an interprime number because it is at equal distance from previous prime (501171464627) and next prime (501171464653).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1950083392 + ... + 1950083648.

Almost surely, 2^501171464640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501171464640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1101591871488).

501171464640 is an abundant number, since it is smaller than the sum of its proper divisors (1702012278336).

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

501171464640 is a wasteful number, since it uses less digits than its factorization.

501171464640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 501171464640 in words is "five hundred one billion, one hundred seventy-one million, four hundred sixty-four thousand, six hundred forty".