16432451540642 has 8 divisors (see below), whose sum is σ = 24648694776300. Its totient is φ = 8216219948544.

The previous prime is 16432451540623. The next prime is 16432451540651. The reversal of 16432451540642 is 24604515423461.

It can be written as a sum of positive squares in 2 ways, for example, as 15171032790001 + 1261418750641 = 3895001^2 + 1123129^2 .

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

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, 3098834 + ... + 6516722.

Almost surely, 2^{16432451540642} is an apocalyptic number.

16432451540642 is a deficient number, since it is larger than the sum of its proper divisors (8216243235658).

16432451540642 is a wasteful number, since it uses less digits than its factorization.

16432451540642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821780.

The product of its (nonzero) digits is 2764800, while the sum is 47.

The spelling of 16432451540642 in words is "sixteen trillion, four hundred thirty-two billion, four hundred fifty-one million, five hundred forty thousand, six hundred forty-two".