998445507782 has 8 divisors (see below), whose sum is σ = 1500875261496. Its totient is φ = 498153753952.

The previous prime is 998445507733. The next prime is 998445507791. The reversal of 998445507782 is 287705544899.

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

It is a congruent number.

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, 534498803 + ... + 534500670.

It is an arithmetic number, because the mean of its divisors is an integer number (187609407687).

Almost surely, 2^998445507782 is an apocalyptic number.

998445507782 is a deficient number, since it is larger than the sum of its proper divisors (502429753714).

998445507782 is a wasteful number, since it uses less digits than its factorization.

998445507782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068999942.

The product of its (nonzero) digits is 203212800, while the sum is 68.

The spelling of 998445507782 in words is "nine hundred ninety-eight billion, four hundred forty-five million, five hundred seven thousand, seven hundred eighty-two".