997163049394 has 16 divisors (see below), whose sum is σ = 1535753020032. Its totient is φ = 485324522928.

The previous prime is 997163049359. The next prime is 997163049451. The reversal of 997163049394 is 493940361799.

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, 19761354 + ... + 19811749.

It is an arithmetic number, because the mean of its divisors is an integer number (95984563752).

Almost surely, 2^997163049394 is an apocalyptic number.

997163049394 is a deficient number, since it is larger than the sum of its proper divisors (538589970638).

997163049394 is a wasteful number, since it uses less digits than its factorization.

997163049394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39573441.

The product of its (nonzero) digits is 39680928, while the sum is 64.

The spelling of 997163049394 in words is "nine hundred ninety-seven billion, one hundred sixty-three million, forty-nine thousand, three hundred ninety-four".