129764281828 has 24 divisors (see below), whose sum is σ = 236752927488. Its totient is φ = 62177527776.

The previous prime is 129764281819. The next prime is 129764281853. The reversal of 129764281828 is 828182467921.

It is a super-2 number, since 2×129764281828² (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 7 ways as a sum of consecutive naturals, for example, 7108276 + ... + 7126507.

It is an arithmetic number, because the mean of its divisors is an integer number (9864705312).

Almost surely, 2^129764281828 is an apocalyptic number.

It is an amenable number.

129764281828 is a deficient number, since it is larger than the sum of its proper divisors (106988645660).

129764281828 is a wasteful number, since it uses less digits than its factorization.

129764281828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14234883 (or 14234881 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 58.

The spelling of 129764281828 in words is "one hundred twenty-nine billion, seven hundred sixty-four million, two hundred eighty-one thousand, eight hundred twenty-eight".