16520372242 has 48 divisors (see below), whose sum is σ = 28704787776. Its totient is φ = 7111412000.

The previous prime is 16520372221. The next prime is 16520372249. The reversal of 16520372242 is 24227302561.

It is a junction number, because it is equal to n+sod(n) for n = 16520372198 and 16520372207.

It is not an unprimeable number, because it can be changed into a prime (16520372249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 547473 + ... + 576859.

It is an arithmetic number, because the mean of its divisors is an integer number (598016412).

Almost surely, 2^16520372242 is an apocalyptic number.

16520372242 is a deficient number, since it is larger than the sum of its proper divisors (12184415534).

16520372242 is a wasteful number, since it uses less digits than its factorization.

16520372242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29535 (or 29524 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 16520372242 in words is "sixteen billion, five hundred twenty million, three hundred seventy-two thousand, two hundred forty-two".