126604400206 has 4 divisors (see below), whose sum is σ = 189906600312. Its totient is φ = 63302200102.

The previous prime is 126604400149. The next prime is 126604400249. The reversal of 126604400206 is 602004406621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 602004406621 = 59 ⋅10203464519.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31651100050 + ... + 31651100053.

It is an arithmetic number, because the mean of its divisors is an integer number (47476650078).

Almost surely, 2^126604400206 is an apocalyptic number.

126604400206 is a deficient number, since it is larger than the sum of its proper divisors (63302200106).

126604400206 is an equidigital number, since it uses as much as digits as its factorization.

126604400206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63302200105.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 126604400206 its reverse (602004406621), we get a palindrome (728608806827).

The spelling of 126604400206 in words is "one hundred twenty-six billion, six hundred four million, four hundred thousand, two hundred six".