20429846458 has 96 divisors (see below), whose sum is σ = 38821582800. Its totient is φ = 8007229440.

The previous prime is 20429846447. The next prime is 20429846467. The reversal of 20429846458 is 85464892402.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14987390929 + 5442455529 = 122423^2 + 73773^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23838366 + ... + 23839222.

Almost surely, 2^20429846458 is an apocalyptic number.

20429846458 is a deficient number, since it is larger than the sum of its proper divisors (18391736342).

20429846458 is a wasteful number, since it uses less digits than its factorization.

20429846458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280 (or 1273 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 20429846458 in words is "twenty billion, four hundred twenty-nine million, eight hundred forty-six thousand, four hundred fifty-eight".