18254105472867 has 16 divisors (see below), whose sum is σ = 26551688761728. Its totient is φ = 11062984801280.

The previous prime is 18254105472859. The next prime is 18254105472913. The reversal of 18254105472867 is 76827450145281.

It is a cyclic number.

It is not a de Polignac number, because 18254105472867 - 2³ = 18254105472859 is a prime.

It is a super-2 number, since 2×18254105472867² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18254105472867.

It is not an unprimeable number, because it can be changed into a prime (18254105472067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716323 + ... + 6084515.

It is an arithmetic number, because the mean of its divisors is an integer number (1659480547608).

Almost surely, 2^{18254105472867} is an apocalyptic number.

18254105472867 is a deficient number, since it is larger than the sum of its proper divisors (8297583288861).

18254105472867 is a wasteful number, since it uses less digits than its factorization.

18254105472867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471250.

The product of its (nonzero) digits is 30105600, while the sum is 60.

The spelling of 18254105472867 in words is "eighteen trillion, two hundred fifty-four billion, one hundred five million, four hundred seventy-two thousand, eight hundred sixty-seven".