40356247445646 has 64 divisors (see below), whose sum is σ = 89612387942400. Its totient is φ = 12012490965600.

The previous prime is 40356247445627. The next prime is 40356247445677. The reversal of 40356247445646 is 64654474265304.

It is a self number, because there is not a number n which added to its sum of digits gives 40356247445646.

It is a congruent number.

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, 928941 + ... + 9031911.

It is an arithmetic number, because the mean of its divisors is an integer number (1400193561600).

Almost surely, 2^{40356247445646} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40356247445646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44806193971200).

40356247445646 is an abundant number, since it is smaller than the sum of its proper divisors (49256140496754).

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

40356247445646 is a wasteful number, since it uses less digits than its factorization.

40356247445646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104325.

The product of its (nonzero) digits is 232243200, while the sum is 60.

The spelling of 40356247445646 in words is "forty trillion, three hundred fifty-six billion, two hundred forty-seven million, four hundred forty-five thousand, six hundred forty-six".