501720537475641 has 16 divisors (see below), whose sum is σ = 730031299077888. Its totient is φ = 303966398082000.

The previous prime is 501720537475627. The next prime is 501720537475687. The reversal of 501720537475641 is 146574735027105.

It is not a de Polignac number, because 501720537475641 - 2¹⁹ = 501720536951353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (501720537475691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2666277831 + ... + 2666465996.

It is an arithmetic number, because the mean of its divisors is an integer number (45626956192368).

Almost surely, 2^{501720537475641} is an apocalyptic number.

It is an amenable number.

501720537475641 is a deficient number, since it is larger than the sum of its proper divisors (228310761602247).

501720537475641 is a wasteful number, since it uses less digits than its factorization.

501720537475641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332746692.

The product of its (nonzero) digits is 24696000, while the sum is 57.

The spelling of 501720537475641 in words is "five hundred one trillion, seven hundred twenty billion, five hundred thirty-seven million, four hundred seventy-five thousand, six hundred forty-one".