126643625620 has 24 divisors (see below), whose sum is σ = 279949068000. Its totient is φ = 47991268512.

The previous prime is 126643625599. The next prime is 126643625653. The reversal of 126643625620 is 26526346621.

It is a super-3 number, since 3×126643625620³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166635970 + ... + 166636729.

It is an arithmetic number, because the mean of its divisors is an integer number (11664544500).

Almost surely, 2^126643625620 is an apocalyptic number.

126643625620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126643625620 is an abundant number, since it is smaller than the sum of its proper divisors (153305442380).

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

126643625620 is a wasteful number, since it uses less digits than its factorization.

126643625620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333272727 (or 333272725 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 126643625620 in words is "one hundred twenty-six billion, six hundred forty-three million, six hundred twenty-five thousand, six hundred twenty".