126801615243 has 16 divisors (see below), whose sum is σ = 173866394016. Its totient is φ = 82151669760.

The previous prime is 126801615217. The next prime is 126801615247. The reversal of 126801615243 is 342516108621.

It is not a de Polignac number, because 126801615243 - 2¹⁷ = 126801484171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126801615247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1974046 + ... + 2037267.

It is an arithmetic number, because the mean of its divisors is an integer number (10866649626).

Almost surely, 2^126801615243 is an apocalyptic number.

126801615243 is a deficient number, since it is larger than the sum of its proper divisors (47064778773).

126801615243 is a wasteful number, since it uses less digits than its factorization.

126801615243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011614.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 126801615243 in words is "one hundred twenty-six billion, eight hundred one million, six hundred fifteen thousand, two hundred forty-three".