36645644244 has 72 divisors (see below), whose sum is σ = 99515170944. Its totient is φ = 10451513600.

The previous prime is 36645644237. The next prime is 36645644293. The reversal of 36645644244 is 44244654663.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 36645644193 and 36645644202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 717612 + ... + 766979.

It is an arithmetic number, because the mean of its divisors is an integer number (1382155152).

Almost surely, 2^36645644244 is an apocalyptic number.

36645644244 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

36645644244 is an abundant number, since it is smaller than the sum of its proper divisors (62869526700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36645644244 is a wasteful number, since it uses less digits than its factorization.

36645644244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484637 (or 1484624 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 48.

The spelling of 36645644244 in words is "thirty-six billion, six hundred forty-five million, six hundred forty-four thousand, two hundred forty-four".