18631267485369 has 48 divisors (see below), whose sum is σ = 31662181667520. Its totient is φ = 9636315776640.

The previous prime is 18631267485307. The next prime is 18631267485377. The reversal of 18631267485369 is 96358476213681.

It is not a de Polignac number, because 18631267485369 - 2¹¹ = 18631267483321 is a prime.

It is a super-2 number, since 2×18631267485369² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18631267485769) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24787174 + ... + 25527759.

It is an arithmetic number, because the mean of its divisors is an integer number (659628784740).

Almost surely, 2^{18631267485369} is an apocalyptic number.

It is an amenable number.

18631267485369 is a deficient number, since it is larger than the sum of its proper divisors (13030914182151).

18631267485369 is a wasteful number, since it uses less digits than its factorization.

18631267485369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50315190 (or 50315183 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 69.

The spelling of 18631267485369 in words is "eighteen trillion, six hundred thirty-one billion, two hundred sixty-seven million, four hundred eighty-five thousand, three hundred sixty-nine".