121644162610 has 8 divisors (see below), whose sum is σ = 218959492716. Its totient is φ = 48657665040.

The previous prime is 121644162589. The next prime is 121644162617. The reversal of 121644162610 is 16261446121.

It can be written as a sum of positive squares in 2 ways, for example, as 119293561321 + 2350601289 = 345389^2 + 48483^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121644162617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6082208121 + ... + 6082208140.

Almost surely, 2^121644162610 is an apocalyptic number.

121644162610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121644162610 is a deficient number, since it is larger than the sum of its proper divisors (97315330106).

121644162610 is a wasteful number, since it uses less digits than its factorization.

121644162610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12164416268.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 121644162610 in words is "one hundred twenty-one billion, six hundred forty-four million, one hundred sixty-two thousand, six hundred ten".