36213450644 has 12 divisors (see below), whose sum is σ = 72426901344. Its totient is φ = 15520050264.

The previous prime is 36213450607. The next prime is 36213450659. The reversal of 36213450644 is 44605431263.

36213450644 is an admirable number.

It is a super-2 number, since 2×36213450644² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 36213450598 and 36213450607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646668734 + ... + 646668789.

It is an arithmetic number, because the mean of its divisors is an integer number (6035575112).

Almost surely, 2^36213450644 is an apocalyptic number.

It is an amenable number.

36213450644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

36213450644 is a wasteful number, since it uses less digits than its factorization.

36213450644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293337534 (or 1293337532 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 36213450644 in words is "thirty-six billion, two hundred thirteen million, four hundred fifty thousand, six hundred forty-four".