666037107421624 has 32 divisors (see below), whose sum is σ = 1303203724884000. Its totient is φ = 318518061789312.

The previous prime is 666037107421591. The next prime is 666037107421627. The reversal of 666037107421624 is 426124701730666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666037107421627) 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, 118986039 + ... + 124457830.

It is an arithmetic number, because the mean of its divisors is an integer number (40725116402625).

Almost surely, 2^{666037107421624} is an apocalyptic number.

It is an amenable number.

666037107421624 is a deficient number, since it is larger than the sum of its proper divisors (637166617462376).

666037107421624 is a wasteful number, since it uses less digits than its factorization.

666037107421624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243458767 (or 243458763 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 55.

The spelling of 666037107421624 in words is "six hundred sixty-six trillion, thirty-seven billion, one hundred seven million, four hundred twenty-one thousand, six hundred twenty-four".