643401413130 has 64 divisors (see below), whose sum is σ = 1857640181760. Its totient is φ = 139323011904.

The previous prime is 643401413101. The next prime is 643401413141. The reversal of 643401413130 is 31314104346.

643401413130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80622754 + ... + 80630733.

It is an arithmetic number, because the mean of its divisors is an integer number (29025627840).

Almost surely, 2^643401413130 is an apocalyptic number.

643401413130 is an abundant number, since it is smaller than the sum of its proper divisors (1214238768630).

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

643401413130 is a wasteful number, since it uses less digits than its factorization.

643401413130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161253523.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 643401413130 its reverse (31314104346), we get a palindrome (674715517476).

The spelling of 643401413130 in words is "six hundred forty-three billion, four hundred one million, four hundred thirteen thousand, one hundred thirty".