40686402020 has 96 divisors (see below), whose sum is σ = 101498140800. Its totient is φ = 13533004800.

The previous prime is 40686401957. The next prime is 40686402037. The reversal of 40686402020 is 2020468604.

It is a happy number.

40686402020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46601 + ... + 289040.

It is an arithmetic number, because the mean of its divisors is an integer number (1057272300).

Almost surely, 2^40686402020 is an apocalyptic number.

It is an amenable number.

40686402020 is an abundant number, since it is smaller than the sum of its proper divisors (60811738780).

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

40686402020 is a wasteful number, since it uses less digits than its factorization.

40686402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335709 (or 335707 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 40686402020 in words is "forty billion, six hundred eighty-six million, four hundred two thousand, twenty".