40420246664 has 16 divisors (see below), whose sum is σ = 86614814400. Its totient is φ = 17322962832.

The previous prime is 40420246651. The next prime is 40420246687. The reversal of 40420246664 is 46664202404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360895004 + ... + 360895115.

It is an arithmetic number, because the mean of its divisors is an integer number (5413425900).

Almost surely, 2^40420246664 is an apocalyptic number.

It is an amenable number.

40420246664 is an abundant number, since it is smaller than the sum of its proper divisors (46194567736).

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

40420246664 is a wasteful number, since it uses less digits than its factorization.

40420246664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721790132 (or 721790128 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 40420246664 in words is "forty billion, four hundred twenty million, two hundred forty-six thousand, six hundred sixty-four".