121384328487 has 8 divisors (see below), whose sum is σ = 163795720704. Its totient is φ = 79947910968.

The previous prime is 121384328447. The next prime is 121384328501. The reversal of 121384328487 is 784823483121.

It is a happy number.

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

It is not a de Polignac number, because 121384328487 - 2³⁰ = 120310586663 is a prime.

It is a super-4 number, since 4×121384328487⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121384328447) 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, 243743383 + ... + 243743880.

It is an arithmetic number, because the mean of its divisors is an integer number (20474465088).

Almost surely, 2^121384328487 is an apocalyptic number.

121384328487 is a deficient number, since it is larger than the sum of its proper divisors (42411392217).

121384328487 is an equidigital number, since it uses as much as digits as its factorization.

121384328487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487487349.

The product of its digits is 2064384, while the sum is 51.

The spelling of 121384328487 in words is "one hundred twenty-one billion, three hundred eighty-four million, three hundred twenty-eight thousand, four hundred eighty-seven".