126212806578 has 16 divisors (see below), whose sum is σ = 252781652160. Its totient is φ = 42011595696.

The previous prime is 126212806571. The next prime is 126212806637. The reversal of 126212806578 is 875608212621.

It is not an unprimeable number, because it can be changed into a prime (126212806571) 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, 14830350 + ... + 14838857.

It is an arithmetic number, because the mean of its divisors is an integer number (15798853260).

Almost surely, 2^126212806578 is an apocalyptic number.

126212806578 is an abundant number, since it is smaller than the sum of its proper divisors (126568845582).

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

126212806578 is a wasteful number, since it uses less digits than its factorization.

126212806578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29669921.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 126212806578 in words is "one hundred twenty-six billion, two hundred twelve million, eight hundred six thousand, five hundred seventy-eight".