125773766566 has 32 divisors (see below), whose sum is σ = 218137416768. Its totient is φ = 53274439680.

The previous prime is 125773766551. The next prime is 125773766581. The reversal of 125773766566 is 665667377521.

It is an interprime number because it is at equal distance from previous prime (125773766551) and next prime (125773766581).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445836 + ... + 671056.

It is an arithmetic number, because the mean of its divisors is an integer number (6816794274).

Almost surely, 2^125773766566 is an apocalyptic number.

125773766566 is a deficient number, since it is larger than the sum of its proper divisors (92363650202).

125773766566 is a wasteful number, since it uses less digits than its factorization.

125773766566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225696.

The product of its digits is 66679200, while the sum is 61.

The spelling of 125773766566 in words is "one hundred twenty-five billion, seven hundred seventy-three million, seven hundred sixty-six thousand, five hundred sixty-six".