125915866850818 has 32 divisors (see below), whose sum is σ = 216177464471040. Its totient is φ = 54480207744000.

The previous prime is 125915866850747. The next prime is 125915866850843. The reversal of 125915866850818 is 818058668519521.

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, 1513297503 + ... + 1513380706.

It is an arithmetic number, because the mean of its divisors is an integer number (6755545764720).

Almost surely, 2^{125915866850818} is an apocalyptic number.

125915866850818 is a deficient number, since it is larger than the sum of its proper divisors (90261597620222).

125915866850818 is a wasteful number, since it uses less digits than its factorization.

125915866850818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026678314.

The product of its (nonzero) digits is 331776000, while the sum is 73.

The spelling of 125915866850818 in words is "one hundred twenty-five trillion, nine hundred fifteen billion, eight hundred sixty-six million, eight hundred fifty thousand, eight hundred eighteen".