40401356416 has 64 divisors (see below), whose sum is σ = 82506216960. Its totient is φ = 19697126400.

The previous prime is 40401356383. The next prime is 40401356423. The reversal of 40401356416 is 61465310404.

It is a tau number, because it is divible by the number of its divisors (64).

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, 1617946 + ... + 1642726.

It is an arithmetic number, because the mean of its divisors is an integer number (1289159640).

Almost surely, 2^40401356416 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 40401356416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41253108480).

40401356416 is an abundant number, since it is smaller than the sum of its proper divisors (42104860544).

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

40401356416 is a wasteful number, since it uses less digits than its factorization.

40401356416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25113 (or 25101 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 40401356416 in words is "forty billion, four hundred one million, three hundred fifty-six thousand, four hundred sixteen".