40476464681 has 2 divisors, whose sum is σ = 40476464682. Its totient is φ = 40476464680.

The previous prime is 40476464671. The next prime is 40476464753. The reversal of 40476464681 is 18646467404.

40476464681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39618912025 + 857552656 = 199045^2 + 29284^2 .

It is a cyclic number.

It is not a de Polignac number, because 40476464681 - 2¹⁸ = 40476202537 is a prime.

It is a super-2 number, since 2×40476464681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40476464671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20238232340 + 20238232341.

It is an arithmetic number, because the mean of its divisors is an integer number (20238232341).

Almost surely, 2^40476464681 is an apocalyptic number.

It is an amenable number.

40476464681 is a deficient number, since it is larger than the sum of its proper divisors (1).

40476464681 is an equidigital number, since it uses as much as digits as its factorization.

40476464681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3096576, while the sum is 50.

The spelling of 40476464681 in words is "forty billion, four hundred seventy-six million, four hundred sixty-four thousand, six hundred eighty-one".