18063401011236 has 405 divisors, whose sum is σ = 55702003960449. Its totient is φ = 5089518935424.

The previous prime is 18063401011217. The next prime is 18063401011241. The reversal of 18063401011236 is 63211010436081.

The square root of 18063401011236 is 4250106.

It is a perfect power (a square), and thus also a powerful number.

18063401011236 is a `hidden beast` number, since 1 + 8 + 0 + 6 + 3 + 401 + 0 + 11 + 236 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3468556108836 + 14594844902400 = 1862406^2 + 3820320^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18063401011236.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 47660688495 + ... + 47660688873.

Almost surely, 2^{18063401011236} is an apocalyptic number.

18063401011236 is the 4250106-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18063401011236

18063401011236 is an abundant number, since it is smaller than the sum of its proper divisors (37638602949213).

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

18063401011236 is an frugal number, since it uses more digits than its factorization.

18063401011236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

Multiplying 18063401011236 by its sum of digits (36), we get a square (650282436404496 = 25500636²).

18063401011236 divided by its sum of digits (36) gives a square (501761139201 = 708351²).

The spelling of 18063401011236 in words is "eighteen trillion, sixty-three billion, four hundred one million, eleven thousand, two hundred thirty-six".