721870684050 has 48 divisors (see below), whose sum is σ = 1833903685152. Its totient is φ = 187803753600.

The previous prime is 721870684049. The next prime is 721870684063. The reversal of 721870684050 is 50486078127.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58682524 + ... + 58694823.

It is an arithmetic number, because the mean of its divisors is an integer number (38206326774).

Almost surely, 2^721870684050 is an apocalyptic number.

721870684050 is an abundant number, since it is smaller than the sum of its proper divisors (1112033001102).

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

721870684050 is a wasteful number, since it uses less digits than its factorization.

721870684050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117377403 (or 117377398 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 721870684050 in words is "seven hundred twenty-one billion, eight hundred seventy million, six hundred eighty-four thousand, fifty".