126208198854 has 12 divisors (see below), whose sum is σ = 273451097556. Its totient is φ = 42069399612.

The previous prime is 126208198841. The next prime is 126208198859. The reversal of 126208198854 is 458891802621.

126208198854 is a `hidden beast` number, since 1 + 2 + 620 + 8 + 1 + 9 + 8 + 8 + 5 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 126208198854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126208198859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3505783284 + ... + 3505783319.

It is an arithmetic number, because the mean of its divisors is an integer number (22787591463).

Almost surely, 2^126208198854 is an apocalyptic number.

126208198854 is an abundant number, since it is smaller than the sum of its proper divisors (147242898702).

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

126208198854 is a wasteful number, since it uses less digits than its factorization.

126208198854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7011566611 (or 7011566608 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 126208198854 in words is "one hundred twenty-six billion, two hundred eight million, one hundred ninety-eight thousand, eight hundred fifty-four".