1971126368608 has 24 divisors (see below), whose sum is σ = 4005837460800. Its totient is φ = 953770823040.

The previous prime is 1971126368597. The next prime is 1971126368633. The reversal of 1971126368608 is 8068636211791.

It is a super-2 number, since 2×1971126368608² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 993510283 + ... + 993512266.

It is an arithmetic number, because the mean of its divisors is an integer number (166909894200).

Almost surely, 2^{1971126368608} is an apocalyptic number.

It is an amenable number.

1971126368608 is an abundant number, since it is smaller than the sum of its proper divisors (2034711092192).

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

1971126368608 is a wasteful number, since it uses less digits than its factorization.

1971126368608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987022590 (or 1987022582 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 1971126368608 in words is "one trillion, nine hundred seventy-one billion, one hundred twenty-six million, three hundred sixty-eight thousand, six hundred eight".