36663642444 has 48 divisors (see below), whose sum is σ = 100504535040. Its totient is φ = 10255563840.

The previous prime is 36663642439. The next prime is 36663642473. The reversal of 36663642444 is 44424636663.

It is a happy number.

It is a super-2 number, since 2×36663642444² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 36663642393 and 36663642402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10681164 + ... + 10684595.

It is an arithmetic number, because the mean of its divisors is an integer number (2093844480).

Almost surely, 2^36663642444 is an apocalyptic number.

It is an amenable number.

36663642444 is an abundant number, since it is smaller than the sum of its proper divisors (63840892596).

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

36663642444 is a wasteful number, since it uses less digits than its factorization.

36663642444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21365790 (or 21365788 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 48.

The spelling of 36663642444 in words is "thirty-six billion, six hundred sixty-three million, six hundred forty-two thousand, four hundred forty-four".