40613389440 has 256 divisors, whose sum is σ = 139766014080. Its totient is φ = 9971859456.

The previous prime is 40613389433. The next prime is 40613389457. The reversal of 40613389440 is 4498331604.

It is a junction number, because it is equal to n+sod(n) for n = 40613389392 and 40613389401.

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, 11055444 + ... + 11059116.

Almost surely, 2^40613389440 is an apocalyptic number.

40613389440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40613389440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69883007040).

40613389440 is an abundant number, since it is smaller than the sum of its proper divisors (99152624640).

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

40613389440 is a wasteful number, since it uses less digits than its factorization.

40613389440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151 (or 4139 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 40613389440 in words is "forty billion, six hundred thirteen million, three hundred eighty-nine thousand, four hundred forty".