121919506358 has 16 divisors (see below), whose sum is σ = 197254171296. Its totient is φ = 56182748160.

The previous prime is 121919506327. The next prime is 121919506381. The reversal of 121919506358 is 853605919121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3641066 + ... + 3674397.

It is an arithmetic number, because the mean of its divisors is an integer number (12328385706).

Almost surely, 2^121919506358 is an apocalyptic number.

121919506358 is a deficient number, since it is larger than the sum of its proper divisors (75334664938).

121919506358 is a wasteful number, since it uses less digits than its factorization.

121919506358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7316119.

The product of its (nonzero) digits is 583200, while the sum is 50.

The spelling of 121919506358 in words is "one hundred twenty-one billion, nine hundred nineteen million, five hundred six thousand, three hundred fifty-eight".