129870311851 has 8 divisors (see below), whose sum is σ = 149014543104. Its totient is φ = 110873913000.

The previous prime is 129870311833. The next prime is 129870311861. The reversal of 129870311851 is 158113078921.

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 129870311851 - 2⁷ = 129870311723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129870311801) 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, 36956215 + ... + 36959728.

It is an arithmetic number, because the mean of its divisors is an integer number (18626817888).

Almost surely, 2^129870311851 is an apocalyptic number.

129870311851 is a deficient number, since it is larger than the sum of its proper divisors (19144231253).

129870311851 is an equidigital number, since it uses as much as digits as its factorization.

129870311851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73916201.

The product of its (nonzero) digits is 120960, while the sum is 46.

The spelling of 129870311851 in words is "one hundred twenty-nine billion, eight hundred seventy million, three hundred eleven thousand, eight hundred fifty-one".