722220700157 has 12 divisors (see below), whose sum is σ = 799173738300. Its totient is φ = 652157784960.

The previous prime is 722220700093. The next prime is 722220700211. The reversal of 722220700157 is 751007022227.

It can be written as a sum of positive squares in 2 ways, for example, as 42339646756 + 679881053401 = 205766^2 + 824549^2 .

It is not a de Polignac number, because 722220700157 - 2⁶ = 722220700093 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 (722220700657) 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, 20011388 + ... + 20047445.

It is an arithmetic number, because the mean of its divisors is an integer number (66597811525).

Almost surely, 2^722220700157 is an apocalyptic number.

It is an amenable number.

722220700157 is a deficient number, since it is larger than the sum of its proper divisors (76953038143).

722220700157 is a wasteful number, since it uses less digits than its factorization.

722220700157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40059004 (or 40058993 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 35.

The spelling of 722220700157 in words is "seven hundred twenty-two billion, two hundred twenty million, seven hundred thousand, one hundred fifty-seven".