126638415670 has 16 divisors (see below), whose sum is σ = 245483698320. Its totient is φ = 46758799584.

The previous prime is 126638415667. The next prime is 126638415677. The reversal of 126638415670 is 76514836621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126638415677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 487070700 + ... + 487070959.

It is an arithmetic number, because the mean of its divisors is an integer number (15342731145).

Almost surely, 2^126638415670 is an apocalyptic number.

126638415670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126638415670 is a deficient number, since it is larger than the sum of its proper divisors (118845282650).

126638415670 is a wasteful number, since it uses less digits than its factorization.

126638415670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974141679.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 126638415670 in words is "one hundred twenty-six billion, six hundred thirty-eight million, four hundred fifteen thousand, six hundred seventy".