46591746581 has 4 divisors (see below), whose sum is σ = 46623038700. Its totient is φ = 46560454464.

The previous prime is 46591746559. The next prime is 46591746671. The reversal of 46591746581 is 18564719564.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4734678481 + 41857068100 = 68809^2 + 204590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-46591746581 is a prime.

It is a super-2 number, since 2×46591746581² (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 (46591716581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15643826 + ... + 15646803.

It is an arithmetic number, because the mean of its divisors is an integer number (11655759675).

Almost surely, 2^46591746581 is an apocalyptic number.

It is an amenable number.

46591746581 is a deficient number, since it is larger than the sum of its proper divisors (31292119).

46591746581 is a wasteful number, since it uses less digits than its factorization.

46591746581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31292118.

The product of its digits is 7257600, while the sum is 56.

The spelling of 46591746581 in words is "forty-six billion, five hundred ninety-one million, seven hundred forty-six thousand, five hundred eighty-one".