873965661400 has 48 divisors (see below), whose sum is σ = 2188275566400. Its totient is φ = 322695012480.

The previous prime is 873965661353. The next prime is 873965661403. The reversal of 873965661400 is 4166569378.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873965661403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168067720 + ... + 168072919.

It is an arithmetic number, because the mean of its divisors is an integer number (45589074300).

Almost surely, 2^873965661400 is an apocalyptic number.

It is an amenable number.

873965661400 is an abundant number, since it is smaller than the sum of its proper divisors (1314309905000).

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

873965661400 is a wasteful number, since it uses less digits than its factorization.

873965661400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336140668 (or 336140659 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 873965661400 in words is "eight hundred seventy-three billion, nine hundred sixty-five million, six hundred sixty-one thousand, four hundred".