216432738490 has 16 divisors (see below), whose sum is σ = 389584777248. Its totient is φ = 86571795856.

The previous prime is 216432738413. The next prime is 216432738517. The reversal of 216432738490 is 94837234612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819969 + ... + 1051291.

It is an arithmetic number, because the mean of its divisors is an integer number (24349048578).

Almost surely, 2^216432738490 is an apocalyptic number.

216432738490 is a deficient number, since it is larger than the sum of its proper divisors (173152038758).

216432738490 is a wasteful number, since it uses less digits than its factorization.

216432738490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324893.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 216432738490 in words is "two hundred sixteen billion, four hundred thirty-two million, seven hundred thirty-eight thousand, four hundred ninety".