126377775407 has 4 divisors (see below), whose sum is σ = 136099142760. Its totient is φ = 116656408056.

The previous prime is 126377775373. The next prime is 126377775421. The reversal of 126377775407 is 704577773621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126377775407 - 2⁶ = 126377775343 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 (126377775427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4860683657 + ... + 4860683682.

It is an arithmetic number, because the mean of its divisors is an integer number (34024785690).

Almost surely, 2^126377775407 is an apocalyptic number.

126377775407 is a deficient number, since it is larger than the sum of its proper divisors (9721367353).

126377775407 is an equidigital number, since it uses as much as digits as its factorization.

126377775407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9721367352.

The product of its (nonzero) digits is 12101040, while the sum is 56.

The spelling of 126377775407 in words is "one hundred twenty-six billion, three hundred seventy-seven million, seven hundred seventy-five thousand, four hundred seven".