423643012477 has 2 divisors, whose sum is σ = 423643012478. Its totient is φ = 423643012476.

The previous prime is 423643012447. The next prime is 423643012493. The reversal of 423643012477 is 774210346324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381264261156 + 42378751321 = 617466^2 + 205861^2 .

It is a cyclic number.

It is not a de Polignac number, because 423643012477 - 2³⁵ = 389283274109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423643012447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211821506238 + 211821506239.

It is an arithmetic number, because the mean of its divisors is an integer number (211821506239).

Almost surely, 2^423643012477 is an apocalyptic number.

It is an amenable number.

423643012477 is a deficient number, since it is larger than the sum of its proper divisors (1).

423643012477 is an equidigital number, since it uses as much as digits as its factorization.

423643012477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 43.

The spelling of 423643012477 in words is "four hundred twenty-three billion, six hundred forty-three million, twelve thousand, four hundred seventy-seven".