16309625642 has 8 divisors (see below), whose sum is σ = 24706660932. Its totient is φ = 8074072000.

The previous prime is 16309625621. The next prime is 16309625653. The reversal of 16309625642 is 24652690361.

It can be written as a sum of positive squares in 2 ways, for example, as 10536817201 + 5772808441 = 102649^2 + 75979^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 16309625593 and 16309625602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40370159 + ... + 40370562.

Almost surely, 2^16309625642 is an apocalyptic number.

16309625642 is a deficient number, since it is larger than the sum of its proper divisors (8397035290).

16309625642 is a wasteful number, since it uses less digits than its factorization.

16309625642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80740824.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 16309625642 in words is "sixteen billion, three hundred nine million, six hundred twenty-five thousand, six hundred forty-two".