129797606894 has 4 divisors (see below), whose sum is σ = 194696410344. Its totient is φ = 64898803446.

The previous prime is 129797606837. The next prime is 129797606977. The reversal of 129797606894 is 498606797921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498606797921 = 1657 ⋅300909353.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32449401722 + ... + 32449401725.

It is an arithmetic number, because the mean of its divisors is an integer number (48674102586).

Almost surely, 2^129797606894 is an apocalyptic number.

129797606894 is a deficient number, since it is larger than the sum of its proper divisors (64898803450).

129797606894 is an equidigital number, since it uses as much as digits as its factorization.

129797606894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64898803449.

The product of its (nonzero) digits is 82301184, while the sum is 68.

The spelling of 129797606894 in words is "one hundred twenty-nine billion, seven hundred ninety-seven million, six hundred six thousand, eight hundred ninety-four".