126291337078 has 16 divisors (see below), whose sum is σ = 191536117344. Its totient is φ = 62447425600.

The previous prime is 126291337061. The next prime is 126291337087. The reversal of 126291337078 is 870733192621.

It is a congruent 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, 191650 + ... + 537877.

It is an arithmetic number, because the mean of its divisors is an integer number (11971007334).

Almost surely, 2^126291337078 is an apocalyptic number.

126291337078 is a deficient number, since it is larger than the sum of its proper divisors (65244780266).

126291337078 is a wasteful number, since it uses less digits than its factorization.

126291337078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730487.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 126291337078 in words is "one hundred twenty-six billion, two hundred ninety-one million, three hundred thirty-seven thousand, seventy-eight".