501340534261 has 8 divisors (see below), whose sum is σ = 572965848320. Its totient is φ = 429716529648.

The previous prime is 501340534193. The next prime is 501340534267. The reversal of 501340534261 is 162435043105.

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

It is not a de Polignac number, because 501340534261 - 2³⁵ = 466980795893 is a prime.

It is a super-2 number, since 2×501340534261² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501340534267) 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, 713860 + ... + 1229746.

It is an arithmetic number, because the mean of its divisors is an integer number (71620731040).

Almost surely, 2^501340534261 is an apocalyptic number.

It is an amenable number.

501340534261 is a deficient number, since it is larger than the sum of its proper divisors (71625314059).

501340534261 is a wasteful number, since it uses less digits than its factorization.

501340534261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654723.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 501340534261 its reverse (162435043105), we get a palindrome (663775577366).

The spelling of 501340534261 in words is "five hundred one billion, three hundred forty million, five hundred thirty-four thousand, two hundred sixty-one".