501696685861 has 8 divisors (see below), whose sum is σ = 573404215104. Its totient is φ = 429998300160.

The previous prime is 501696685859. The next prime is 501696685871. The reversal of 501696685861 is 168586696105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 501696685861 - 2¹ = 501696685859 is a prime.

It is a super-2 number, since 2×501696685861² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 501696685861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501696685871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167900 + ... + 2388133.

It is an arithmetic number, because the mean of its divisors is an integer number (71675526888).

Almost surely, 2^501696685861 is an apocalyptic number.

It is an amenable number.

501696685861 is a deficient number, since it is larger than the sum of its proper divisors (71707529243).

501696685861 is a wasteful number, since it uses less digits than its factorization.

501696685861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571771.

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 501696685861 in words is "five hundred one billion, six hundred ninety-six million, six hundred eighty-five thousand, eight hundred sixty-one".