40199635677 has 4 divisors (see below), whose sum is σ = 53599514240. Its totient is φ = 26799757116.

The previous prime is 40199635649. The next prime is 40199635687. The reversal of 40199635677 is 77653699104.

It is a happy number.

40199635677 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 not a de Polignac number, because 40199635677 - 2⁷ = 40199635549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40199635607) 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, 6699939277 + ... + 6699939282.

It is an arithmetic number, because the mean of its divisors is an integer number (13399878560).

Almost surely, 2^40199635677 is an apocalyptic number.

It is an amenable number.

40199635677 is a deficient number, since it is larger than the sum of its proper divisors (13399878563).

40199635677 is a wasteful number, since it uses less digits than its factorization.

40199635677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13399878562.

The product of its (nonzero) digits is 8573040, while the sum is 57.

The spelling of 40199635677 in words is "forty billion, one hundred ninety-nine million, six hundred thirty-five thousand, six hundred seventy-seven".