721159150131 has 32 divisors (see below), whose sum is σ = 1228787386880. Its totient is φ = 409466143008.

The previous prime is 721159150081. The next prime is 721159150133. The reversal of 721159150131 is 131051951127.

721159150131 is a `hidden beast` number, since 7 + 2 + 1 + 1 + 591 + 50 + 13 + 1 = 666.

It is not a de Polignac number, because 721159150131 - 2¹⁰ = 721159149107 is a prime.

It is a super-2 number, since 2×721159150131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721159150133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12122101 + ... + 12181446.

It is an arithmetic number, because the mean of its divisors is an integer number (38399605840).

Almost surely, 2^721159150131 is an apocalyptic number.

721159150131 is a deficient number, since it is larger than the sum of its proper divisors (507628236749).

721159150131 is a wasteful number, since it uses less digits than its factorization.

721159150131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24303720 (or 24303714 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 36.

The spelling of 721159150131 in words is "seven hundred twenty-one billion, one hundred fifty-nine million, one hundred fifty thousand, one hundred thirty-one".