10218121613668 has 96 divisors (see below), whose sum is σ = 19442355609600. Its totient is φ = 4686621709440.

The previous prime is 10218121613593. The next prime is 10218121613671. The reversal of 10218121613668 is 86631612181201.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69296283 + ... + 69443581.

It is an arithmetic number, because the mean of its divisors is an integer number (202524537600).

Almost surely, 2^{10218121613668} is an apocalyptic number.

It is an amenable number.

10218121613668 is a deficient number, since it is larger than the sum of its proper divisors (9224233995932).

10218121613668 is a wasteful number, since it uses less digits than its factorization.

10218121613668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147697 (or 147695 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

Adding to 10218121613668 its reverse (86631612181201), we get a palindrome (96849733794869).

The spelling of 10218121613668 in words is "ten trillion, two hundred eighteen billion, one hundred twenty-one million, six hundred thirteen thousand, six hundred sixty-eight".