20515434622 has 32 divisors (see below), whose sum is σ = 32004830592. Its totient is φ = 9854659584.

The previous prime is 20515434557. The next prime is 20515434701. The reversal of 20515434622 is 22643451502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3320328 + ... + 3326500.

It is an arithmetic number, because the mean of its divisors is an integer number (1000150956).

Almost surely, 2^20515434622 is an apocalyptic number.

20515434622 is a deficient number, since it is larger than the sum of its proper divisors (11489395970).

20515434622 is a wasteful number, since it uses less digits than its factorization.

20515434622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 20515434622 in words is "twenty billion, five hundred fifteen million, four hundred thirty-four thousand, six hundred twenty-two".