46481939577981 has 64 divisors (see below), whose sum is σ = 72478566720000. Its totient is φ = 29769052509504.

The previous prime is 46481939577979. The next prime is 46481939578049. The reversal of 46481939577981 is 18977593918464.

46481939577981 is a `hidden beast` number, since 4 + 6 + 4 + 8 + 1 + 9 + 39 + 577 + 9 + 8 + 1 = 666.

It is not a de Polignac number, because 46481939577981 - 2¹ = 46481939577979 is a prime.

It is a super-2 number, since 2×46481939577981² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 46481939577981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46481939577581) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10779751 + ... + 14462603.

It is an arithmetic number, because the mean of its divisors is an integer number (1132477605000).

Almost surely, 2^{46481939577981} is an apocalyptic number.

It is an amenable number.

46481939577981 is a deficient number, since it is larger than the sum of its proper divisors (25996627142019).

46481939577981 is an equidigital number, since it uses as much as digits as its factorization.

46481939577981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683102 (or 3683084 counting only the distinct ones).

The product of its digits is 3292047360, while the sum is 81.

The spelling of 46481939577981 in words is "forty-six trillion, four hundred eighty-one billion, nine hundred thirty-nine million, five hundred seventy-seven thousand, nine hundred eighty-one".