3664557460921 has 8 divisors (see below), whose sum is σ = 4188977940224. Its totient is φ = 3140365049280.

The previous prime is 3664557460903. The next prime is 3664557460951. The reversal of 3664557460921 is 1290647554663.

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 3664557460921 - 2⁷ = 3664557460793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3664557460951) 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, 56982480 + ... + 57046753.

It is an arithmetic number, because the mean of its divisors is an integer number (523622242528).

Almost surely, 2^{3664557460921} is an apocalyptic number.

It is an amenable number.

3664557460921 is a deficient number, since it is larger than the sum of its proper divisors (524420479303).

3664557460921 is a wasteful number, since it uses less digits than its factorization.

3664557460921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114033831.

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 3664557460921 in words is "three trillion, six hundred sixty-four billion, five hundred fifty-seven million, four hundred sixty thousand, nine hundred twenty-one".