722742631847 has 4 divisors (see below), whose sum is σ = 754166224560. Its totient is φ = 691319039136.

The previous prime is 722742631817. The next prime is 722742631859. The reversal of 722742631847 is 748136247227.

It is a happy number.

722742631847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 722742631847 - 2¹² = 722742627751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722742631817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15711796322 + ... + 15711796367.

It is an arithmetic number, because the mean of its divisors is an integer number (188541556140).

Almost surely, 2^722742631847 is an apocalyptic number.

722742631847 is a deficient number, since it is larger than the sum of its proper divisors (31423592713).

722742631847 is a wasteful number, since it uses less digits than its factorization.

722742631847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31423592712.

The product of its digits is 6322176, while the sum is 53.

The spelling of 722742631847 in words is "seven hundred twenty-two billion, seven hundred forty-two million, six hundred thirty-one thousand, eight hundred forty-seven".