157017121711 has 4 divisors (see below), whose sum is σ = 157057150392. Its totient is φ = 156977093032.

The previous prime is 157017121669. The next prime is 157017121769. The reversal of 157017121711 is 117121710751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 117121710751 = 4703 ⋅24903617.

It is a cyclic number.

It is not a de Polignac number, because 157017121711 - 2²³ = 157008733103 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 (157017121771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20008456 + ... + 20016301.

It is an arithmetic number, because the mean of its divisors is an integer number (39264287598).

Almost surely, 2^157017121711 is an apocalyptic number.

157017121711 is a deficient number, since it is larger than the sum of its proper divisors (40028681).

157017121711 is an equidigital number, since it uses as much as digits as its factorization.

157017121711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40028680.

The product of its (nonzero) digits is 3430, while the sum is 34.

The spelling of 157017121711 in words is "one hundred fifty-seven billion, seventeen million, one hundred twenty-one thousand, seven hundred eleven".