40017312763621 has 8 divisors (see below), whose sum is σ = 41308539090944. Its totient is φ = 38726108015760.

The previous prime is 40017312763619. The next prime is 40017312763663. The reversal of 40017312763621 is 12636721371004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40017312763621 - 2¹ = 40017312763619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40017312763921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1583445 + ... + 9085258.

It is an arithmetic number, because the mean of its divisors is an integer number (5163567386368).

Almost surely, 2^{40017312763621} is an apocalyptic number.

It is an amenable number.

40017312763621 is a deficient number, since it is larger than the sum of its proper divisors (1291226327323).

40017312763621 is a wasteful number, since it uses less digits than its factorization.

40017312763621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10789731.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 40017312763621 in words is "forty trillion, seventeen billion, three hundred twelve million, seven hundred sixty-three thousand, six hundred twenty-one".