366664767021 has 144 divisors (see below), whose sum is σ = 635466044928. Its totient is φ = 203066740800.

The previous prime is 366664767013. The next prime is 366664767037. The reversal of 366664767021 is 120767466663.

It is not a de Polignac number, because 366664767021 - 2³ = 366664767013 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366664767421) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 642144666 + ... + 642145236.

Almost surely, 2^366664767021 is an apocalyptic number.

It is an amenable number.

366664767021 is a deficient number, since it is larger than the sum of its proper divisors (268801277907).

366664767021 is a wasteful number, since it uses less digits than its factorization.

366664767021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 54.

The spelling of 366664767021 in words is "three hundred sixty-six billion, six hundred sixty-four million, seven hundred sixty-seven thousand, twenty-one".