40245740064 has 72 divisors (see below), whose sum is σ = 114469222140. Its totient is φ = 13412855808.

The previous prime is 40245740063. The next prime is 40245740081. The reversal of 40245740064 is 46004754204.

40245740064 is a `hidden beast` number, since 4 + 0 + 24 + 574 + 0 + 0 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39637624464 + 608115600 = 199092^2 + 24660^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40245740063) 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, 2450472 + ... + 2466840.

Almost surely, 2^40245740064 is an apocalyptic number.

It is an amenable number.

40245740064 is an abundant number, since it is smaller than the sum of its proper divisors (74223482076).

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

40245740064 is a wasteful number, since it uses less digits than its factorization.

40245740064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24922 (or 24911 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The spelling of 40245740064 in words is "forty billion, two hundred forty-five million, seven hundred forty thousand, sixty-four".