20601515022 has 32 divisors (see below), whose sum is σ = 44953902720. Its totient is φ = 6242169120.

The previous prime is 20601515003. The next prime is 20601515089. The reversal of 20601515022 is 22051510602.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20601514983 and 20601515001.

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, 997533 + ... + 1017975.

It is an arithmetic number, because the mean of its divisors is an integer number (1404809460).

Almost surely, 2^20601515022 is an apocalyptic number.

20601515022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20601515022 is an abundant number, since it is smaller than the sum of its proper divisors (24352387698).

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

20601515022 is a wasteful number, since it uses less digits than its factorization.

20601515022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35728.

The product of its (nonzero) digits is 1200, while the sum is 24.

The spelling of 20601515022 in words is "twenty billion, six hundred one million, five hundred fifteen thousand, twenty-two".