623879289801780 has 24 divisors (see below), whose sum is σ = 1746862011445152. Its totient is φ = 166367810613792.

The previous prime is 623879289801679. The next prime is 623879289801791. The reversal of 623879289801780 is 87108982978326.

It is a junction number, because it is equal to n+sod(n) for n = 623879289801696 and 623879289801705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5198994081622 + ... + 5198994081741.

It is an arithmetic number, because the mean of its divisors is an integer number (72785917143548).

Almost surely, 2^{623879289801780} is an apocalyptic number.

623879289801780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

623879289801780 is an abundant number, since it is smaller than the sum of its proper divisors (1122982721643372).

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

623879289801780 is a wasteful number, since it uses less digits than its factorization.

623879289801780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10397988163375 (or 10397988163373 counting only the distinct ones).

The product of its (nonzero) digits is 1170505728, while the sum is 78.

The spelling of 623879289801780 in words is "six hundred twenty-three trillion, eight hundred seventy-nine billion, two hundred eighty-nine million, eight hundred one thousand, seven hundred eighty".