15151264752081 has 4 divisors (see below), whose sum is σ = 20201686336112. Its totient is φ = 10100843168052.

The previous prime is 15151264752077. The next prime is 15151264752109. The reversal of 15151264752081 is 18025746215151.

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.

It is not a de Polignac number, because 15151264752081 - 2² = 15151264752077 is a prime.

It is a super-2 number, since 2×15151264752081² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15151264752081.

It is not an unprimeable number, because it can be changed into a prime (15151264752011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525210792011 + ... + 2525210792016.

It is an arithmetic number, because the mean of its divisors is an integer number (5050421584028).

Almost surely, 2^{15151264752081} is an apocalyptic number.

It is an amenable number.

15151264752081 is a deficient number, since it is larger than the sum of its proper divisors (5050421584031).

15151264752081 is an equidigital number, since it uses as much as digits as its factorization.

15151264752081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050421584030.

The product of its (nonzero) digits is 672000, while the sum is 48.

The spelling of 15151264752081 in words is "fifteen trillion, one hundred fifty-one billion, two hundred sixty-four million, seven hundred fifty-two thousand, eighty-one".