998034432451 has 4 divisors (see below), whose sum is σ = 1140610779952. Its totient is φ = 855458084952.

The previous prime is 998034432449. The next prime is 998034432467. The reversal of 998034432451 is 154234430899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 998034432451 - 2¹ = 998034432449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998034432401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71288173740 + ... + 71288173753.

It is an arithmetic number, because the mean of its divisors is an integer number (285152694988).

Almost surely, 2^998034432451 is an apocalyptic number.

998034432451 is a deficient number, since it is larger than the sum of its proper divisors (142576347501).

998034432451 is a wasteful number, since it uses less digits than its factorization.

998034432451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142576347500.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 998034432451 in words is "nine hundred ninety-eight billion, thirty-four million, four hundred thirty-two thousand, four hundred fifty-one".