157271805731 has 8 divisors (see below), whose sum is σ = 164358754560. Its totient is φ = 150205610632.

The previous prime is 157271805709. The next prime is 157271805773. The reversal of 157271805731 is 137508172751.

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

It is a cyclic number.

It is not a de Polignac number, because 157271805731 - 2⁶ = 157271805667 is a prime.

It is a super-2 number, since 2×157271805731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157271805701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5172935 + ... + 5203248.

It is an arithmetic number, because the mean of its divisors is an integer number (20544844320).

Almost surely, 2^157271805731 is an apocalyptic number.

157271805731 is a deficient number, since it is larger than the sum of its proper divisors (7086948829).

157271805731 is a wasteful number, since it uses less digits than its factorization.

157271805731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10376865.

The product of its (nonzero) digits is 411600, while the sum is 47.

The spelling of 157271805731 in words is "one hundred fifty-seven billion, two hundred seventy-one million, eight hundred five thousand, seven hundred thirty-one".