721747374854 has 8 divisors (see below), whose sum is σ = 1181041158888. Its totient is φ = 328066988560.

The previous prime is 721747374839. The next prime is 721747374889. The reversal of 721747374854 is 458473747127.

721747374854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 721747374793 and 721747374802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16403349407 + ... + 16403349450.

It is an arithmetic number, because the mean of its divisors is an integer number (147630144861).

Almost surely, 2^721747374854 is an apocalyptic number.

721747374854 is a deficient number, since it is larger than the sum of its proper divisors (459293784034).

721747374854 is a wasteful number, since it uses less digits than its factorization.

721747374854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32806698870.

The product of its digits is 36879360, while the sum is 59.

The spelling of 721747374854 in words is "seven hundred twenty-one billion, seven hundred forty-seven million, three hundred seventy-four thousand, eight hundred fifty-four".