129777694982 has 32 divisors (see below), whose sum is σ = 211060793664. Its totient is φ = 59492275200.

The previous prime is 129777694807. The next prime is 129777695023. The reversal of 129777694982 is 289496777921.

It is a super-2 number, since 2×129777694982² (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, 5898482 + ... + 5920442.

It is an arithmetic number, because the mean of its divisors is an integer number (6595649802).

Almost surely, 2^129777694982 is an apocalyptic number.

129777694982 is a deficient number, since it is larger than the sum of its proper divisors (81283098682).

129777694982 is a wasteful number, since it uses less digits than its factorization.

129777694982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23504.

The product of its digits is 192036096, while the sum is 71.

The spelling of 129777694982 in words is "one hundred twenty-nine billion, seven hundred seventy-seven million, six hundred ninety-four thousand, nine hundred eighty-two".