481690561502501 has 8 divisors (see below), whose sum is σ = 518984621583960. Its totient is φ = 444430921416192.

The previous prime is 481690561502441. The next prime is 481690561502551. The reversal of 481690561502501 is 105205165096184.

It is a Cunningham number, because it is equal to 21947450²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 481690561502500 = 1^2 + 21947450^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481690561502501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481690561502551) 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, 8604969716 + ... + 8605025693.

It is an arithmetic number, because the mean of its divisors is an integer number (64873077697995).

Almost surely, 2^{481690561502501} is an apocalyptic number.

It is an amenable number.

481690561502501 is a deficient number, since it is larger than the sum of its proper divisors (37294060081459).

481690561502501 is a wasteful number, since it uses less digits than its factorization.

481690561502501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17209997575.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The spelling of 481690561502501 in words is "four hundred eighty-one trillion, six hundred ninety billion, five hundred sixty-one million, five hundred two thousand, five hundred one".