20601386972 has 12 divisors (see below), whose sum is σ = 36138474120. Its totient is φ = 10276108656.

The previous prime is 20601386969. The next prime is 20601386977. The reversal of 20601386972 is 27968310602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20601386977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6144323 + ... + 6147674.

It is an arithmetic number, because the mean of its divisors is an integer number (3011539510).

Almost surely, 2^20601386972 is an apocalyptic number.

It is an amenable number.

20601386972 is a deficient number, since it is larger than the sum of its proper divisors (15537087148).

20601386972 is a wasteful number, since it uses less digits than its factorization.

20601386972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12292420 (or 12292418 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 20601386972 in words is "twenty billion, six hundred one million, three hundred eighty-six thousand, nine hundred seventy-two".