126778214399 has 32 divisors (see below), whose sum is σ = 134781926400. Its totient is φ = 119098062720.

The previous prime is 126778214383. The next prime is 126778214401. The reversal of 126778214399 is 993412877621.

It is not a de Polignac number, because 126778214399 - 2⁴ = 126778214383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126778214359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40776257 + ... + 40779365.

It is an arithmetic number, because the mean of its divisors is an integer number (4211935200).

Almost surely, 2^126778214399 is an apocalyptic number.

126778214399 is a deficient number, since it is larger than the sum of its proper divisors (8003712001).

126778214399 is a wasteful number, since it uses less digits than its factorization.

126778214399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503.

The product of its digits is 9144576, while the sum is 59.

The spelling of 126778214399 in words is "one hundred twenty-six billion, seven hundred seventy-eight million, two hundred fourteen thousand, three hundred ninety-nine".