151281726826 has 4 divisors (see below), whose sum is σ = 226922590242. Its totient is φ = 75640863412.

The previous prime is 151281726823. The next prime is 151281726829. The reversal of 151281726826 is 628627182151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 628627182151 = 3167 ⋅198492953.

It is an interprime number because it is at equal distance from previous prime (151281726823) and next prime (151281726829).

It can be written as a sum of positive squares in only one way, i.e., 147495170601 + 3786556225 = 384051^2 + 61535^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 151281726826.

It is not an unprimeable number, because it can be changed into a prime (151281726821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37820431705 + ... + 37820431708.

Almost surely, 2^151281726826 is an apocalyptic number.

151281726826 is a deficient number, since it is larger than the sum of its proper divisors (75640863416).

151281726826 is an equidigital number, since it uses as much as digits as its factorization.

151281726826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75640863415.

The product of its digits is 645120, while the sum is 49.

The spelling of 151281726826 in words is "one hundred fifty-one billion, two hundred eighty-one million, seven hundred twenty-six thousand, eight hundred twenty-six".