629748123879 has 128 divisors (see below), whose sum is σ = 1059979640832. Its totient is φ = 324301086720.

The previous prime is 629748123877. The next prime is 629748123923. The reversal of 629748123879 is 978321847926.

It is not a de Polignac number, because 629748123879 - 2¹ = 629748123877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629748123877) 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 127 ways as a sum of consecutive naturals, for example, 509092449 + ... + 509093685.

It is an arithmetic number, because the mean of its divisors is an integer number (8281090944).

Almost surely, 2^629748123879 is an apocalyptic number.

629748123879 is a deficient number, since it is larger than the sum of its proper divisors (430231516953).

629748123879 is a wasteful number, since it uses less digits than its factorization.

629748123879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745.

The product of its digits is 73156608, while the sum is 66.

The spelling of 629748123879 in words is "six hundred twenty-nine billion, seven hundred forty-eight million, one hundred twenty-three thousand, eight hundred seventy-nine".