121643524406 has 8 divisors (see below), whose sum is σ = 182900765880. Its totient is φ = 60676602448.

The previous prime is 121643524393. The next prime is 121643524423. The reversal of 121643524406 is 604425346121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121643524406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72578831 + ... + 72580506.

It is an arithmetic number, because the mean of its divisors is an integer number (22862595735).

Almost surely, 2^121643524406 is an apocalyptic number.

121643524406 is a deficient number, since it is larger than the sum of its proper divisors (61257241474).

121643524406 is a wasteful number, since it uses less digits than its factorization.

121643524406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145159758.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 121643524406 in words is "one hundred twenty-one billion, six hundred forty-three million, five hundred twenty-four thousand, four hundred six".