997537583166 has 16 divisors (see below), whose sum is σ = 1996473273984. Its totient is φ = 332279509784.

The previous prime is 997537583143. The next prime is 997537583167. The reversal of 997537583166 is 661385735799.

997537583166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 997537583166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997537583167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58245210 + ... + 58262333.

It is an arithmetic number, because the mean of its divisors is an integer number (124779579624).

Almost surely, 2^997537583166 is an apocalyptic number.

997537583166 is an abundant number, since it is smaller than the sum of its proper divisors (998935690818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997537583166 is a wasteful number, since it uses less digits than its factorization.

997537583166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116508975.

The product of its digits is 257191200, while the sum is 69.

The spelling of 997537583166 in words is "nine hundred ninety-seven billion, five hundred thirty-seven million, five hundred eighty-three thousand, one hundred sixty-six".