366303220661 has 32 divisors (see below), whose sum is σ = 431220174336. Its totient is φ = 304708320000.

The previous prime is 366303220639. The next prime is 366303220687. The reversal of 366303220661 is 166022303663.

It is not a de Polignac number, because 366303220661 - 2¹⁴ = 366303204277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366303220561) 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, 8662991 + ... + 8705171.

It is an arithmetic number, because the mean of its divisors is an integer number (13475630448).

Almost surely, 2^366303220661 is an apocalyptic number.

It is an amenable number.

366303220661 is a deficient number, since it is larger than the sum of its proper divisors (64916953675).

366303220661 is a wasteful number, since it uses less digits than its factorization.

366303220661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42533.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 366303220661 in words is "three hundred sixty-six billion, three hundred three million, two hundred twenty thousand, six hundred sixty-one".