851975132948 has 6 divisors (see below), whose sum is σ = 1490956482666. Its totient is φ = 425987566472.

The previous prime is 851975132929. The next prime is 851975132951. The reversal of 851975132948 is 849231579158.

It can be written as a sum of positive squares in only one way, i.e., 840408560644 + 11566572304 = 916738^2 + 107548^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106496891615 + ... + 106496891622.

It is an arithmetic number, because the mean of its divisors is an integer number (248492747111).

Almost surely, 2^851975132948 is an apocalyptic number.

It is an amenable number.

851975132948 is a deficient number, since it is larger than the sum of its proper divisors (638981349718).

851975132948 is a wasteful number, since it uses less digits than its factorization.

851975132948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212993783241 (or 212993783239 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 62.

The spelling of 851975132948 in words is "eight hundred fifty-one billion, nine hundred seventy-five million, one hundred thirty-two thousand, nine hundred forty-eight".