121604550004 has 36 divisors (see below), whose sum is σ = 254243192224. Its totient is φ = 49850306352.

The previous prime is 121604549999. The next prime is 121604550031. The reversal of 121604550004 is 400055406121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4090122 + ... + 4119745.

Almost surely, 2^121604550004 is an apocalyptic number.

121604550004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121604550004 is an abundant number, since it is smaller than the sum of its proper divisors (132638642220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121604550004 is a wasteful number, since it uses less digits than its factorization.

121604550004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8209924 (or 8209899 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 121604550004 its reverse (400055406121), we get a palindrome (521659956125).

The spelling of 121604550004 in words is "one hundred twenty-one billion, six hundred four million, five hundred fifty thousand, four".