40400246064 has 40 divisors (see below), whose sum is σ = 107733993472. Its totient is φ = 13032336960.

The previous prime is 40400246053. The next prime is 40400246087. The reversal of 40400246064 is 46064200404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13573864 + ... + 13576839.

Almost surely, 2^40400246064 is an apocalyptic number.

It is an amenable number.

40400246064 is an abundant number, since it is smaller than the sum of its proper divisors (67333747408).

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

40400246064 is a wasteful number, since it uses less digits than its factorization.

40400246064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27150745 (or 27150739 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 40400246064 its reverse (46064200404), we get a palindrome (86464446468).

The spelling of 40400246064 in words is "forty billion, four hundred million, two hundred forty-six thousand, sixty-four".