18149565264477 has 8 divisors (see below), whose sum is σ = 24305094678240. Its totient is φ = 12046873013520.

The previous prime is 18149565264449. The next prime is 18149565264511. The reversal of 18149565264477 is 77446256594181.

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

It is not a de Polignac number, because 18149565264477 - 2¹² = 18149565260381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18149565264427) 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, 13209289899 + ... + 13209291272.

It is an arithmetic number, because the mean of its divisors is an integer number (3038136834780).

Almost surely, 2^{18149565264477} is an apocalyptic number.

It is an amenable number.

18149565264477 is a deficient number, since it is larger than the sum of its proper divisors (6155529413763).

18149565264477 is a wasteful number, since it uses less digits than its factorization.

18149565264477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26418581403.

The product of its digits is 406425600, while the sum is 69.

The spelling of 18149565264477 in words is "eighteen trillion, one hundred forty-nine billion, five hundred sixty-five million, two hundred sixty-four thousand, four hundred seventy-seven".