16650242431 has 8 divisors (see below), whose sum is σ = 17528201600. Its totient is φ = 15772446360.

The previous prime is 16650242369. The next prime is 16650242467. The reversal of 16650242431 is 13424205661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16650242431 - 2¹⁹ = 16649718143 is a prime.

It is a super-2 number, since 2×16650242431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16650242471) 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, 207646 + ... + 276436.

It is an arithmetic number, because the mean of its divisors is an integer number (2191025200).

Almost surely, 2^16650242431 is an apocalyptic number.

16650242431 is a deficient number, since it is larger than the sum of its proper divisors (877959169).

16650242431 is a wasteful number, since it uses less digits than its factorization.

16650242431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81549.

The product of its (nonzero) digits is 34560, while the sum is 34.

It can be divided in two parts, 16650 and 242431, that added together give a square (259081 = 509²).

The spelling of 16650242431 in words is "sixteen billion, six hundred fifty million, two hundred forty-two thousand, four hundred thirty-one".