720523652157 has 8 divisors (see below), whose sum is σ = 1067442447680. Its totient is φ = 480349101420.

The previous prime is 720523652143. The next prime is 720523652179. The reversal of 720523652157 is 751256325027.

720523652157 is a `hidden beast` number, since 7 + 20 + 52 + 3 + 6 + 521 + 57 = 666.

It is not a de Polignac number, because 720523652157 - 2¹⁶ = 720523586621 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 (720523652257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13343030569 + ... + 13343030622.

It is an arithmetic number, because the mean of its divisors is an integer number (133430305960).

Almost surely, 2^720523652157 is an apocalyptic number.

It is an amenable number.

720523652157 is a deficient number, since it is larger than the sum of its proper divisors (346918795523).

720523652157 is a wasteful number, since it uses less digits than its factorization.

720523652157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26686061200 (or 26686061194 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The spelling of 720523652157 in words is "seven hundred twenty billion, five hundred twenty-three million, six hundred fifty-two thousand, one hundred fifty-seven".