818120620801 has 8 divisors (see below), whose sum is σ = 892510012800. Its totient is φ = 743733693840.

The previous prime is 818120620789. The next prime is 818120620813. The reversal of 818120620801 is 108026021818.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (818120620789) and next prime (818120620813).

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

It is a cyclic number.

It is not a de Polignac number, because 818120620801 - 2²⁵ = 818087066369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (818120620841) 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, 115480 + ... + 1284358.

It is an arithmetic number, because the mean of its divisors is an integer number (111563751600).

Almost surely, 2^818120620801 is an apocalyptic number.

It is an amenable number.

818120620801 is a deficient number, since it is larger than the sum of its proper divisors (74389391999).

818120620801 is a wasteful number, since it uses less digits than its factorization.

818120620801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232519.

The product of its (nonzero) digits is 12288, while the sum is 37.

The spelling of 818120620801 in words is "eight hundred eighteen billion, one hundred twenty million, six hundred twenty thousand, eight hundred one".