125993819217 has 128 divisors (see below), whose sum is σ = 214010368000. Its totient is φ = 65676344832.

The previous prime is 125993819183. The next prime is 125993819249. The reversal of 125993819217 is 712918399521.

It is not a de Polignac number, because 125993819217 - 2⁶ = 125993819153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125993819117) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 61369563 + ... + 61371615.

It is an arithmetic number, because the mean of its divisors is an integer number (1671956000).

Almost surely, 2^125993819217 is an apocalyptic number.

It is an amenable number.

125993819217 is a deficient number, since it is larger than the sum of its proper divisors (88016548783).

125993819217 is a wasteful number, since it uses less digits than its factorization.

125993819217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 2198 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 57.

The spelling of 125993819217 in words is "one hundred twenty-five billion, nine hundred ninety-three million, eight hundred nineteen thousand, two hundred seventeen".