126300551381 has 4 divisors (see below), whose sum is σ = 126301325664. Its totient is φ = 126299777100.

The previous prime is 126300551371. The next prime is 126300551393. The reversal of 126300551381 is 183155003621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 126300551381 - 2⁶ = 126300551317 is a prime.

It is a super-2 number, since 2×126300551381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126300551371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36755 + ... + 503936.

It is an arithmetic number, because the mean of its divisors is an integer number (31575331416).

Almost surely, 2^126300551381 is an apocalyptic number.

It is an amenable number.

126300551381 is a deficient number, since it is larger than the sum of its proper divisors (774283).

126300551381 is an equidigital number, since it uses as much as digits as its factorization.

126300551381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774282.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 126300551381 in words is "one hundred twenty-six billion, three hundred million, five hundred fifty-one thousand, three hundred eighty-one".