126604400215 has 16 divisors (see below), whose sum is σ = 159930126720. Its totient is φ = 95947541280.

The previous prime is 126604400149. The next prime is 126604400249. The reversal of 126604400215 is 512004406621.

It is a happy number.

It is not a de Polignac number, because 126604400215 - 2²¹ = 126602303063 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3235920 + ... + 3274810.

It is an arithmetic number, because the mean of its divisors is an integer number (9995632920).

Almost surely, 2^126604400215 is an apocalyptic number.

126604400215 is a deficient number, since it is larger than the sum of its proper divisors (33325726505).

126604400215 is a wasteful number, since it uses less digits than its factorization.

126604400215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73182.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 126604400215 its reverse (512004406621), we get a palindrome (638608806836).

The spelling of 126604400215 in words is "one hundred twenty-six billion, six hundred four million, four hundred thousand, two hundred fifteen".