18252396551 has 8 divisors (see below), whose sum is σ = 18295200000. Its totient is φ = 18209619000.

The previous prime is 18252396541. The next prime is 18252396563. The reversal of 18252396551 is 15569325281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18252396551 is a prime.

It is a super-4 number, since 4×18252396551⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18252396496 and 18252396505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18252396521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2366900 + ... + 2374598.

It is an arithmetic number, because the mean of its divisors is an integer number (2286900000).

Almost surely, 2^18252396551 is an apocalyptic number.

18252396551 is a deficient number, since it is larger than the sum of its proper divisors (42803449).

18252396551 is an equidigital number, since it uses as much as digits as its factorization.

18252396551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12949.

The product of its digits is 648000, while the sum is 47.

The spelling of 18252396551 in words is "eighteen billion, two hundred fifty-two million, three hundred ninety-six thousand, five hundred fifty-one".