20420530658 has 32 divisors (see below), whose sum is σ = 34396608960. Its totient is φ = 9010647360.

The previous prime is 20420530633. The next prime is 20420530723. The reversal of 20420530658 is 85603502402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332288 + ... + 388916.

It is an arithmetic number, because the mean of its divisors is an integer number (1074894030).

Almost surely, 2^20420530658 is an apocalyptic number.

20420530658 is a deficient number, since it is larger than the sum of its proper divisors (13976078302).

20420530658 is a wasteful number, since it uses less digits than its factorization.

20420530658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57122.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 20420530658 in words is "twenty billion, four hundred twenty million, five hundred thirty thousand, six hundred fifty-eight".