46451826981 has 144 divisors (see below), whose sum is σ = 83860233600. Its totient is φ = 24758939520.

The previous prime is 46451826929. The next prime is 46451826983. The reversal of 46451826981 is 18962815464.

46451826981 is a `hidden beast` number, since 4 + 64 + 518 + 2 + 69 + 8 + 1 = 666.

It is not a de Polignac number, because 46451826981 - 2⁷ = 46451826853 is a prime.

It is a super-2 number, since 2×46451826981² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46451826983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 81351426 + ... + 81351996.

Almost surely, 2^46451826981 is an apocalyptic number.

It is an amenable number.

46451826981 is a deficient number, since it is larger than the sum of its proper divisors (37408406619).

46451826981 is a wasteful number, since it uses less digits than its factorization.

46451826981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 673 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 46451826981 in words is "forty-six billion, four hundred fifty-one million, eight hundred twenty-six thousand, nine hundred eighty-one".