40153691648 has 160 divisors (see below), whose sum is σ = 97527091200. Its totient is φ = 16132276224.

The previous prime is 40153691639. The next prime is 40153691651. The reversal of 40153691648 is 84619635104.

It is a super-2 number, since 2×40153691648² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6602273 + ... + 6608351.

It is an arithmetic number, because the mean of its divisors is an integer number (609544320).

Almost surely, 2^40153691648 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 40153691648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48763545600).

40153691648 is an abundant number, since it is smaller than the sum of its proper divisors (57373399552).

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

40153691648 is an equidigital number, since it uses as much as digits as its factorization.

40153691648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6220 (or 6204 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 40153691648 in words is "forty billion, one hundred fifty-three million, six hundred ninety-one thousand, six hundred forty-eight".