40643598744 has 448 divisors, whose sum is σ = 139869024000. Its totient is φ = 10808328960.

The previous prime is 40643598733. The next prime is 40643598757. The reversal of 40643598744 is 44789534604.

40643598744 is a `hidden beast` number, since 4 + 0 + 6 + 4 + 3 + 598 + 7 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 47314587 + ... + 47315445.

Almost surely, 2^40643598744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40643598744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69934512000).

40643598744 is an abundant number, since it is smaller than the sum of its proper divisors (99225425256).

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

40643598744 is a wasteful number, since it uses less digits than its factorization.

40643598744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 40643598744 in words is "forty billion, six hundred forty-three million, five hundred ninety-eight thousand, seven hundred forty-four".