409431178780 has 48 divisors (see below), whose sum is σ = 955813549824. Its totient is φ = 146297986560.

The previous prime is 409431178763. The next prime is 409431178781. The reversal of 409431178780 is 87871134904.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409431178781) 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, 25390897 + ... + 25407016.

It is an arithmetic number, because the mean of its divisors is an integer number (19912782288).

Almost surely, 2^409431178780 is an apocalyptic number.

It is an amenable number.

409431178780 is an abundant number, since it is smaller than the sum of its proper divisors (546382371044).

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

409431178780 is a wasteful number, since it uses less digits than its factorization.

409431178780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50797966 (or 50797964 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 409431178780 in words is "four hundred nine billion, four hundred thirty-one million, one hundred seventy-eight thousand, seven hundred eighty".