501818157374016 has 672 divisors, whose sum is σ = 1761501442793472. Its totient is φ = 124911865774080.

The previous prime is 501818157373853. The next prime is 501818157374099. The reversal of 501818157374016 is 610473751818105.

It is a tau number, because it is divible by the number of its divisors (672).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 111834075 + ... + 116234661.

Almost surely, 2^{501818157374016} is an apocalyptic number.

501818157374016 is a gapful number since it is divisible by the number (56) 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 501818157374016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (880750721396736).

501818157374016 is an abundant number, since it is smaller than the sum of its proper divisors (1259683285419456).

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

501818157374016 is a wasteful number, since it uses less digits than its factorization.

501818157374016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400687 (or 4400670 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 57.

The spelling of 501818157374016 in words is "five hundred one trillion, eight hundred eighteen billion, one hundred fifty-seven million, three hundred seventy-four thousand, sixteen".