40890763908 has 36 divisors (see below), whose sum is σ = 103435025148. Its totient is φ = 13620725760.

The previous prime is 40890763883. The next prime is 40890763909. The reversal of 40890763908 is 80936709804.

40890763908 is a `hidden beast` number, since 408 + 90 + 7 + 63 + 90 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16933296384 + 23957467524 = 130128^2 + 154782^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (40890763909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 344733 + ... + 447908.

It is an arithmetic number, because the mean of its divisors is an integer number (2873195143).

Almost surely, 2^40890763908 is an apocalyptic number.

It is an amenable number.

40890763908 is an abundant number, since it is smaller than the sum of its proper divisors (62544261240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40890763908 is a wasteful number, since it uses less digits than its factorization.

40890763908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794084 (or 794079 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 40890763908 in words is "forty billion, eight hundred ninety million, seven hundred sixty-three thousand, nine hundred eight".