421154666523099 has 8 divisors (see below), whose sum is σ = 623932839293520. Its totient is φ = 280769777682048.

The previous prime is 421154666523067. The next prime is 421154666523103. The reversal of 421154666523099 is 990325666451124.

It is not a de Polignac number, because 421154666523099 - 2⁵ = 421154666523067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421154666522099) 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, 7799160491142 + ... + 7799160491195.

It is an arithmetic number, because the mean of its divisors is an integer number (77991604911690).

Almost surely, 2^{421154666523099} is an apocalyptic number.

421154666523099 is a deficient number, since it is larger than the sum of its proper divisors (202778172770421).

421154666523099 is a wasteful number, since it uses less digits than its factorization.

421154666523099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15598320982346 (or 15598320982340 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 63.

The spelling of 421154666523099 in words is "four hundred twenty-one trillion, one hundred fifty-four billion, six hundred sixty-six million, five hundred twenty-three thousand, ninety-nine".