78125000129 has 8 divisors (see below), whose sum is σ = 85267068672. Its totient is φ = 70989564240.

The previous prime is 78125000119. The next prime is 78125000143. The reversal of 78125000129 is 92100052187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78125000129 - 2⁸ = 78124999873 is a prime.

It is a super-2 number, since 2×78125000129² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78125000119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1633514 + ... + 1680659.

It is an arithmetic number, because the mean of its divisors is an integer number (10658383584).

Almost surely, 2^78125000129 is an apocalyptic number.

It is an amenable number.

78125000129 is a deficient number, since it is larger than the sum of its proper divisors (7142068543).

78125000129 is a wasteful number, since it uses less digits than its factorization.

78125000129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3316327.

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 78125000129 in words is "seventy-eight billion, one hundred twenty-five million, one hundred twenty-nine", and thus it is an aban number.