36403872021504 has 1056 divisors, whose sum is σ = 121962317480640. Its totient is φ = 10768652697600.

The previous prime is 36403872021463. The next prime is 36403872021511. The reversal of 36403872021504 is 40512027830463.

36403872021504 is a `hidden beast` number, since 3 + 6 + 40 + 3 + 87 + 2 + 0 + 21 + 504 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 36403872021504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 26360514894 + ... + 26360516274.

Almost surely, 2^{36403872021504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36403872021504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60981158740320).

36403872021504 is an abundant number, since it is smaller than the sum of its proper divisors (85558445459136).

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

36403872021504 is a wasteful number, since it uses less digits than its factorization.

36403872021504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1709 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

Adding to 36403872021504 its reverse (40512027830463), we get a palindrome (76915899851967).

The spelling of 36403872021504 in words is "thirty-six trillion, four hundred three billion, eight hundred seventy-two million, twenty-one thousand, five hundred four".