997662080781142 has 16 divisors (see below), whose sum is σ = 1711761181375392. Its totient is φ = 427198631040000.

The previous prime is 997662080781109. The next prime is 997662080781173. The reversal of 997662080781142 is 241187080266799.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30902662609 + ... + 30902694892.

It is an arithmetic number, because the mean of its divisors is an integer number (106985073835962).

Almost surely, 2^{997662080781142} is an apocalyptic number.

997662080781142 is a deficient number, since it is larger than the sum of its proper divisors (714099100594250).

997662080781142 is a wasteful number, since it uses less digits than its factorization.

997662080781142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61805358663.

The product of its (nonzero) digits is 146313216, while the sum is 70.

The spelling of 997662080781142 in words is "nine hundred ninety-seven trillion, six hundred sixty-two billion, eighty million, seven hundred eighty-one thousand, one hundred forty-two".