126929179890 has 48 divisors (see below), whose sum is σ = 330038631000. Its totient is φ = 33845446656.

The previous prime is 126929179889. The next prime is 126929179919. The reversal of 126929179890 is 98971929621.

126929179890 is a `hidden beast` number, since 1 + 269 + 291 + 7 + 9 + 89 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 126929025441 + 154449 = 356271^2 + 393^2 .

It is a super-2 number, since 2×126929179890² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1555836 + ... + 1635384.

Almost surely, 2^126929179890 is an apocalyptic number.

126929179890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126929179890 is an abundant number, since it is smaller than the sum of its proper divisors (203109451110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126929179890 is a wasteful number, since it uses less digits than its factorization.

126929179890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97291 (or 97288 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 63.

The spelling of 126929179890 in words is "one hundred twenty-six billion, nine hundred twenty-nine million, one hundred seventy-nine thousand, eight hundred ninety".