3120998996550 has 24 divisors (see below), whose sum is σ = 7740077511816. Its totient is φ = 832266399040.

The previous prime is 3120998996527. The next prime is 3120998996561. The reversal of 3120998996550 is 556998990213.

It is a super-2 number, since 2×3120998996550² (a number of 26 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 10403329839 + ... + 10403330138.

It is an arithmetic number, because the mean of its divisors is an integer number (322503229659).

Almost surely, 2^{3120998996550} is an apocalyptic number.

3120998996550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3120998996550 is an abundant number, since it is smaller than the sum of its proper divisors (4619078515266).

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

3120998996550 is a wasteful number, since it uses less digits than its factorization.

3120998996550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20806659992 (or 20806659987 counting only the distinct ones).

The product of its (nonzero) digits is 47239200, while the sum is 66.

The spelling of 3120998996550 in words is "three trillion, one hundred twenty billion, nine hundred ninety-eight million, nine hundred ninety-six thousand, five hundred fifty".