129848420805 has 16 divisors (see below), whose sum is σ = 207915016320. Its totient is φ = 69199976768.

The previous prime is 129848420747. The next prime is 129848420861. The reversal of 129848420805 is 508024848921.

It is a cyclic number.

It is not a de Polignac number, because 129848420805 - 2¹⁴ = 129848404421 is a prime.

It is a super-2 number, since 2×129848420805² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3261702 + ... + 3301271.

It is an arithmetic number, because the mean of its divisors is an integer number (12994688520).

Almost surely, 2^129848420805 is an apocalyptic number.

129848420805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129848420805 is a deficient number, since it is larger than the sum of its proper divisors (78066595515).

129848420805 is a wasteful number, since it uses less digits than its factorization.

129848420805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6564300.

The product of its (nonzero) digits is 1474560, while the sum is 51.

The spelling of 129848420805 in words is "one hundred twenty-nine billion, eight hundred forty-eight million, four hundred twenty thousand, eight hundred five".