126846531251 has 16 divisors (see below), whose sum is σ = 143678016000. Its totient is φ = 110927728800.

The previous prime is 126846531241. The next prime is 126846531257. The reversal of 126846531251 is 152135648621.

It is a cyclic number.

It is not a de Polignac number, because 126846531251 - 2¹⁸ = 126846269107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126846531257) 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 15 ways as a sum of consecutive naturals, for example, 647201 + ... + 820098.

It is an arithmetic number, because the mean of its divisors is an integer number (8979876000).

Almost surely, 2^126846531251 is an apocalyptic number.

126846531251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126846531251 is a deficient number, since it is larger than the sum of its proper divisors (16831484749).

126846531251 is a wasteful number, since it uses less digits than its factorization.

126846531251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467610.

The product of its digits is 345600, while the sum is 44.

The spelling of 126846531251 in words is "one hundred twenty-six billion, eight hundred forty-six million, five hundred thirty-one thousand, two hundred fifty-one".