9928434061870 has 16 divisors (see below), whose sum is σ = 18097398797760. Its totient is φ = 3921103072224.

The previous prime is 9928434061859. The next prime is 9928434061877. The reversal of 9928434061870 is 781604348299.

It is a junction number, because it is equal to n+sod(n) for n = 9928434061799 and 9928434061808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9928434061877) 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, 6283818237 + ... + 6283819816.

It is an arithmetic number, because the mean of its divisors is an integer number (1131087424860).

Almost surely, 2^{9928434061870} is an apocalyptic number.

9928434061870 is a deficient number, since it is larger than the sum of its proper divisors (8168964735890).

9928434061870 is a wasteful number, since it uses less digits than its factorization.

9928434061870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12567638139.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 9928434061870 in words is "nine trillion, nine hundred twenty-eight billion, four hundred thirty-four million, sixty-one thousand, eight hundred seventy".