126650655138 has 16 divisors (see below), whose sum is σ = 289487211840. Its totient is φ = 36185901456.

The previous prime is 126650655127. The next prime is 126650655179. The reversal of 126650655138 is 831556056621.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1507745853 + ... + 1507745936.

It is an arithmetic number, because the mean of its divisors is an integer number (18092950740).

Almost surely, 2^126650655138 is an apocalyptic number.

126650655138 is an abundant number, since it is smaller than the sum of its proper divisors (162836556702).

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

126650655138 is a wasteful number, since it uses less digits than its factorization.

126650655138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015491801.

The product of its (nonzero) digits is 1296000, while the sum is 48.

The spelling of 126650655138 in words is "one hundred twenty-six billion, six hundred fifty million, six hundred fifty-five thousand, one hundred thirty-eight".