23401778780 has 24 divisors (see below), whose sum is σ = 49630311360. Its totient is φ = 9268030400.

The previous prime is 23401778779. The next prime is 23401778797. The reversal of 23401778780 is 8787710432.

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, 5790500 + ... + 5794539.

It is an arithmetic number, because the mean of its divisors is an integer number (2067929640).

Almost surely, 2^23401778780 is an apocalyptic number.

23401778780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23401778780 is an abundant number, since it is smaller than the sum of its proper divisors (26228532580).

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

23401778780 is a wasteful number, since it uses less digits than its factorization.

23401778780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11585149 (or 11585147 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 47.

The spelling of 23401778780 in words is "twenty-three billion, four hundred one million, seven hundred seventy-eight thousand, seven hundred eighty".