740666374456221 has 32 divisors (see below), whose sum is σ = 1099948907792000. Its totient is φ = 492578429624064.

The previous prime is 740666374456213. The next prime is 740666374456249. The reversal of 740666374456221 is 122654473666047.

It is not a de Polignac number, because 740666374456221 - 2³ = 740666374456213 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 (740666374456271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94299810 + ... + 101851788.

It is an arithmetic number, because the mean of its divisors is an integer number (34373403368500).

Almost surely, 2^{740666374456221} is an apocalyptic number.

It is an amenable number.

740666374456221 is a deficient number, since it is larger than the sum of its proper divisors (359282533335779).

740666374456221 is a wasteful number, since it uses less digits than its factorization.

740666374456221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7560810 (or 7560804 counting only the distinct ones).

The product of its (nonzero) digits is 243855360, while the sum is 63.

The spelling of 740666374456221 in words is "seven hundred forty trillion, six hundred sixty-six billion, three hundred seventy-four million, four hundred fifty-six thousand, two hundred twenty-one".