995117411251 has 4 divisors (see below), whose sum is σ = 995119447504. Its totient is φ = 995115375000.

The previous prime is 995117411227. The next prime is 995117411273. The reversal of 995117411251 is 152114711599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152114711599 = 23 ⋅6613683113.

It is a 3-Lehmer number, since φ(995117411251) divides (995117411251-1)³.

It is a cyclic number.

It is not a de Polignac number, because 995117411251 - 2¹¹ = 995117409203 is a prime.

It is a super-2 number, since 2×995117411251² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (995117411221) 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, 203626 + ... + 1425376.

It is an arithmetic number, because the mean of its divisors is an integer number (248779861876).

Almost surely, 2^995117411251 is an apocalyptic number.

995117411251 is the 814501-st pentagonal number.

995117411251 is a deficient number, since it is larger than the sum of its proper divisors (2036253).

995117411251 is a wasteful number, since it uses less digits than its factorization.

995117411251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036252.

The product of its digits is 113400, while the sum is 46.

The spelling of 995117411251 in words is "nine hundred ninety-five billion, one hundred seventeen million, four hundred eleven thousand, two hundred fifty-one".