151593722861 has 4 divisors (see below), whose sum is σ = 173249968992. Its totient is φ = 129937476732.

The previous prime is 151593722831. The next prime is 151593722869. The reversal of 151593722861 is 168227395151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 168227395151 = 19 ⋅8854073429.

It is not a de Polignac number, because 151593722861 - 2¹⁴ = 151593706477 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 (151593722869) 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, 10828123055 + ... + 10828123068.

It is an arithmetic number, because the mean of its divisors is an integer number (43312492248).

Almost surely, 2^151593722861 is an apocalyptic number.

It is an amenable number.

151593722861 is a deficient number, since it is larger than the sum of its proper divisors (21656246131).

151593722861 is an equidigital number, since it uses as much as digits as its factorization.

151593722861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21656246130.

The product of its digits is 907200, while the sum is 50.

The spelling of 151593722861 in words is "one hundred fifty-one billion, five hundred ninety-three million, seven hundred twenty-two thousand, eight hundred sixty-one".