481553406623861 has 32 divisors (see below), whose sum is σ = 566538017181696. Its totient is φ = 403531765560000.

The previous prime is 481553406623857. The next prime is 481553406623867. The reversal of 481553406623861 is 168326604355184.

It is not a de Polignac number, because 481553406623861 - 2² = 481553406623857 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 481553406623794 and 481553406623803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481553406623867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 452417636 + ... + 453480786.

It is an arithmetic number, because the mean of its divisors is an integer number (17704313036928).

Almost surely, 2^{481553406623861} is an apocalyptic number.

It is an amenable number.

481553406623861 is a deficient number, since it is larger than the sum of its proper divisors (84984610557835).

481553406623861 is a wasteful number, since it uses less digits than its factorization.

481553406623861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067633.

The product of its (nonzero) digits is 99532800, while the sum is 62.

The spelling of 481553406623861 in words is "four hundred eighty-one trillion, five hundred fifty-three billion, four hundred six million, six hundred twenty-three thousand, eight hundred sixty-one".