46751814981 has 10 divisors (see below), whose sum is σ = 69839131142. Its totient is φ = 31167876600.

The previous prime is 46751814959. The next prime is 46751814997. The reversal of 46751814981 is 18941815764.

46751814981 is a `hidden beast` number, since 4 + 6 + 7 + 518 + 1 + 49 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 45612144900 + 1139670081 = 213570^2 + 33759^2 .

It is not a de Polignac number, because 46751814981 - 2⁶ = 46751814917 is a prime.

It is a super-2 number, since 2×46751814981² (a number of 22 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 (46751814931) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 288591370 + ... + 288591531.

Almost surely, 2^46751814981 is an apocalyptic number.

It is an amenable number.

46751814981 is a deficient number, since it is larger than the sum of its proper divisors (23087316161).

46751814981 is an equidigital number, since it uses as much as digits as its factorization.

46751814981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577182913 (or 577182904 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 46751814981 in words is "forty-six billion, seven hundred fifty-one million, eight hundred fourteen thousand, nine hundred eighty-one".