18525690077244 has 384 divisors, whose sum is σ = 54429743757312. Its totient is φ = 4783294218240.

The previous prime is 18525690077243. The next prime is 18525690077249. The reversal of 18525690077244 is 44277009652581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18525690077243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5231766114 + ... + 5231769654.

It is an arithmetic number, because the mean of its divisors is an integer number (141744124368).

Almost surely, 2^{18525690077244} is an apocalyptic number.

18525690077244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18525690077244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27214871878656).

18525690077244 is an abundant number, since it is smaller than the sum of its proper divisors (35904053680068).

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

18525690077244 is a wasteful number, since it uses less digits than its factorization.

18525690077244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4885 (or 4883 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 60.

The spelling of 18525690077244 in words is "eighteen trillion, five hundred twenty-five billion, six hundred ninety million, seventy-seven thousand, two hundred forty-four".