157731271563 has 4 divisors (see below), whose sum is σ = 210308362088. Its totient is φ = 105154181040.

The previous prime is 157731271559. The next prime is 157731271567. The reversal of 157731271563 is 365172137751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365172137751 = 3 ⋅121724045917.

It is an interprime number because it is at equal distance from previous prime (157731271559) and next prime (157731271567).

It is not a de Polignac number, because 157731271563 - 2² = 157731271559 is a prime.

It is a super-3 number, since 3×157731271563³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157731271567) 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 3 ways as a sum of consecutive naturals, for example, 26288545258 + ... + 26288545263.

It is an arithmetic number, because the mean of its divisors is an integer number (52577090522).

Almost surely, 2^157731271563 is an apocalyptic number.

157731271563 is a deficient number, since it is larger than the sum of its proper divisors (52577090525).

157731271563 is an equidigital number, since it uses as much as digits as its factorization.

157731271563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52577090524.

The product of its digits is 926100, while the sum is 48.

The spelling of 157731271563 in words is "one hundred fifty-seven billion, seven hundred thirty-one million, two hundred seventy-one thousand, five hundred sixty-three".