816246693890 has 32 divisors (see below), whose sum is σ = 1562516766720. Its totient is φ = 306125720064.

The previous prime is 816246693881. The next prime is 816246693917. The reversal of 816246693890 is 98396642618.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22126082 + ... + 22162941.

It is an arithmetic number, because the mean of its divisors is an integer number (48828648960).

Almost surely, 2^816246693890 is an apocalyptic number.

816246693890 is a deficient number, since it is larger than the sum of its proper divisors (746270072830).

816246693890 is a wasteful number, since it uses less digits than its factorization.

816246693890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44289146.

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 816246693890 in words is "eight hundred sixteen billion, two hundred forty-six million, six hundred ninety-three thousand, eight hundred ninety".