129877273378 has 8 divisors (see below), whose sum is σ = 195136860672. Its totient is φ = 64831653156.

The previous prime is 129877273321. The next prime is 129877273381. The reversal of 129877273378 is 873372778921.

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

It is a super-2 number, since 2×129877273378² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53490250 + ... + 53492677.

It is an arithmetic number, because the mean of its divisors is an integer number (24392107584).

Almost surely, 2^129877273378 is an apocalyptic number.

129877273378 is a deficient number, since it is larger than the sum of its proper divisors (65259587294).

129877273378 is a wasteful number, since it uses less digits than its factorization.

129877273378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106983536.

The product of its digits is 49787136, while the sum is 64.

The spelling of 129877273378 in words is "one hundred twenty-nine billion, eight hundred seventy-seven million, two hundred seventy-three thousand, three hundred seventy-eight".