36623744647 has 4 divisors (see below), whose sum is σ = 41855708176. Its totient is φ = 31391781120.

The previous prime is 36623744621. The next prime is 36623744653. The reversal of 36623744647 is 74644732663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74644732663 = 421 ⋅177303403.

It is not a de Polignac number, because 36623744647 - 2¹¹ = 36623742599 is a prime.

It is a super-2 number, since 2×36623744647² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36623744594 and 36623744603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36623744347) 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, 2615981754 + ... + 2615981767.

It is an arithmetic number, because the mean of its divisors is an integer number (10463927044).

Almost surely, 2^36623744647 is an apocalyptic number.

36623744647 is a deficient number, since it is larger than the sum of its proper divisors (5231963529).

36623744647 is an equidigital number, since it uses as much as digits as its factorization.

36623744647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231963528.

The product of its digits is 12192768, while the sum is 52.

The spelling of 36623744647 in words is "thirty-six billion, six hundred twenty-three million, seven hundred forty-four thousand, six hundred forty-seven".