10120399984 has 60 divisors (see below), whose sum is σ = 20178576792. Its totient is φ = 4917061120.

The previous prime is 10120399981. The next prime is 10120399997. The reversal of 10120399984 is 48999302101.

It is a happy number.

It is a super-2 number, since 2×10120399984² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120399981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8525439 + ... + 8526625.

Almost surely, 2^10120399984 is an apocalyptic number.

It is an amenable number.

10120399984 is a deficient number, since it is larger than the sum of its proper divisors (10058176808).

10120399984 is a wasteful number, since it uses less digits than its factorization.

10120399984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 10120399984 in words is "ten billion, one hundred twenty million, three hundred ninety-nine thousand, nine hundred eighty-four".