40641464977 has 4 divisors (see below), whose sum is σ = 40646900736. Its totient is φ = 40636029220.

The previous prime is 40641464839. The next prime is 40641465017. The reversal of 40641464977 is 77946414604.

40641464977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40641464977 - 2³⁵ = 6281726609 is a prime.

It is a super-2 number, since 2×40641464977² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40611464977) 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, 2706649 + ... + 2721622.

It is an arithmetic number, because the mean of its divisors is an integer number (10161725184).

Almost surely, 2^40641464977 is an apocalyptic number.

It is an amenable number.

40641464977 is a deficient number, since it is larger than the sum of its proper divisors (5435759).

40641464977 is an equidigital number, since it uses as much as digits as its factorization.

40641464977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435758.

The product of its (nonzero) digits is 4064256, while the sum is 52.

The spelling of 40641464977 in words is "forty billion, six hundred forty-one million, four hundred sixty-four thousand, nine hundred seventy-seven".