40646918490 has 64 divisors (see below), whose sum is σ = 98242498944. Its totient is φ = 10762622208.

The previous prime is 40646918479. The next prime is 40646918561. The reversal of 40646918490 is 9481964604.

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, 11052532 + ... + 11056208.

It is an arithmetic number, because the mean of its divisors is an integer number (1535039046).

Almost surely, 2^40646918490 is an apocalyptic number.

40646918490 is an abundant number, since it is smaller than the sum of its proper divisors (57595580454).

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

40646918490 is a wasteful number, since it uses less digits than its factorization.

40646918490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6191.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 40646918490 in words is "forty billion, six hundred forty-six million, nine hundred eighteen thousand, four hundred ninety".