36815787851 has 4 divisors (see below), whose sum is σ = 37180300704. Its totient is φ = 36451275000.

The previous prime is 36815787839. The next prime is 36815787863. The reversal of 36815787851 is 15878751863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15878751863 = 13 ⋅1221442451.

It is an interprime number because it is at equal distance from previous prime (36815787839) and next prime (36815787863).

It is a cyclic number.

It is not a de Polignac number, because 36815787851 - 2⁶ = 36815787787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36815789851) 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, 182256275 + ... + 182256476.

It is an arithmetic number, because the mean of its divisors is an integer number (9295075176).

Almost surely, 2^36815787851 is an apocalyptic number.

36815787851 is a deficient number, since it is larger than the sum of its proper divisors (364512853).

36815787851 is a wasteful number, since it uses less digits than its factorization.

36815787851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364512852.

The product of its digits is 11289600, while the sum is 59.

The spelling of 36815787851 in words is "thirty-six billion, eight hundred fifteen million, seven hundred eighty-seven thousand, eight hundred fifty-one".