126255525552621 has 32 divisors (see below), whose sum is σ = 187197261027840. Its totient is φ = 84101960217600.

The previous prime is 126255525552589. The next prime is 126255525552643.

126255525552621 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 5 + 5 + 5 + 2 + 5 + 5 + 5 + 2 + 621 = 666.

126255525552621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 126255525552621 - 2⁵ = 126255525552589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126255525552671) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 169481641 + ... + 170224961.

It is an arithmetic number, because the mean of its divisors is an integer number (5849914407120).

Almost surely, 2^{126255525552621} is an apocalyptic number.

It is an amenable number.

126255525552621 is a deficient number, since it is larger than the sum of its proper divisors (60941735475219).

126255525552621 is a wasteful number, since it uses less digits than its factorization.

126255525552621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748434 (or 748428 counting only the distinct ones).

The product of its digits is 18000000, while the sum is 54.

The spelling of 126255525552621 in words is "one hundred twenty-six trillion, two hundred fifty-five billion, five hundred twenty-five million, five hundred fifty-two thousand, six hundred twenty-one".