126610667520 has 96 divisors (see below), whose sum is σ = 405055319760. Its totient is φ = 33762836480.

The previous prime is 126610667509. The next prime is 126610667531. The reversal of 126610667520 is 25766016621.

It is an interprime number because it is at equal distance from previous prime (126610667509) and next prime (126610667531).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×126610667520² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030001 + ... + 2091440.

Almost surely, 2^126610667520 is an apocalyptic number.

126610667520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126610667520 is an abundant number, since it is smaller than the sum of its proper divisors (278444652240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126610667520 is an equidigital number, since it uses as much as digits as its factorization.

126610667520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121471 (or 4121451 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 126610667520 in words is "one hundred twenty-six billion, six hundred ten million, six hundred sixty-seven thousand, five hundred twenty".