421577540373 has 16 divisors (see below), whose sum is σ = 613218396672. Its totient is φ = 255495414000.

The previous prime is 421577540341. The next prime is 421577540401. The reversal of 421577540373 is 373045775124.

421577540373 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 421577540373 - 2⁵ = 421577540341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421577540873) 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, 1515528 + ... + 1771998.

It is an arithmetic number, because the mean of its divisors is an integer number (38326149792).

Almost surely, 2^421577540373 is an apocalyptic number.

It is an amenable number.

421577540373 is a deficient number, since it is larger than the sum of its proper divisors (191640856299).

421577540373 is a wasteful number, since it uses less digits than its factorization.

421577540373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306296.

The product of its (nonzero) digits is 2469600, while the sum is 48.

The spelling of 421577540373 in words is "four hundred twenty-one billion, five hundred seventy-seven million, five hundred forty thousand, three hundred seventy-three".