423502677771978 has 32 divisors (see below), whose sum is σ = 982453973174784. Its totient is φ = 119194783508592.

The previous prime is 423502677771919. The next prime is 423502677771989. The reversal of 423502677771978 is 879177776205324.

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75249229200 + ... + 75249234827.

It is an arithmetic number, because the mean of its divisors is an integer number (30701686661712).

It is a 1-persistent number, because it is pandigital, but 2⋅423502677771978 = 847005355543956 is not.

Almost surely, 2^{423502677771978} is an apocalyptic number.

423502677771978 is an abundant number, since it is smaller than the sum of its proper divisors (558951295402806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423502677771978 is a wasteful number, since it uses less digits than its factorization.

423502677771978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150498464106.

The product of its (nonzero) digits is 1742549760, while the sum is 75.

The spelling of 423502677771978 in words is "four hundred twenty-three trillion, five hundred two billion, six hundred seventy-seven million, seven hundred seventy-one thousand, nine hundred seventy-eight".