73666626650421 has 16 divisors (see below), whose sum is σ = 112278105292800. Its totient is φ = 42086140972848.

The previous prime is 73666626650389. The next prime is 73666626650437. The reversal of 73666626650421 is 12405662666637.

It is not a de Polignac number, because 73666626650421 - 2⁵ = 73666626650389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73666626600421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377994261 + ... + 378189098.

It is an arithmetic number, because the mean of its divisors is an integer number (7017381580800).

Almost surely, 2^{73666626650421} is an apocalyptic number.

It is an amenable number.

73666626650421 is a deficient number, since it is larger than the sum of its proper divisors (38611478642379).

73666626650421 is a wasteful number, since it uses less digits than its factorization.

73666626650421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756188008.

The product of its (nonzero) digits is 78382080, while the sum is 60.

The spelling of 73666626650421 in words is "seventy-three trillion, six hundred sixty-six billion, six hundred twenty-six million, six hundred fifty thousand, four hundred twenty-one".