20658023064 has 48 divisors (see below), whose sum is σ = 63941501520. Its totient is φ = 5902292160.

The previous prime is 20658023053. The next prime is 20658023119. The reversal of 20658023064 is 46032085602.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20493567 + ... + 20494574.

It is an arithmetic number, because the mean of its divisors is an integer number (1332114615).

Almost surely, 2^20658023064 is an apocalyptic number.

20658023064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20658023064 is an abundant number, since it is smaller than the sum of its proper divisors (43283478456).

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

20658023064 is a wasteful number, since it uses less digits than its factorization.

20658023064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40988160 (or 40988153 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 20658023064 in words is "twenty billion, six hundred fifty-eight million, twenty-three thousand, sixty-four".