126640841455 has 24 divisors (see below), whose sum is σ = 160772094000. Its totient is φ = 95750785152.

The previous prime is 126640841399. The next prime is 126640841461. The reversal of 126640841455 is 554148046621.

It is not a de Polignac number, because 126640841455 - 2⁹ = 126640840943 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 672571 + ... + 840019.

It is an arithmetic number, because the mean of its divisors is an integer number (6698837250).

Almost surely, 2^126640841455 is an apocalyptic number.

126640841455 is a deficient number, since it is larger than the sum of its proper divisors (34131252545).

126640841455 is a wasteful number, since it uses less digits than its factorization.

126640841455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167911 (or 167892 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 126640841455 in words is "one hundred twenty-six billion, six hundred forty million, eight hundred forty-one thousand, four hundred fifty-five".