20601571970 has 32 divisors (see below), whose sum is σ = 42423284736. Its totient is φ = 7056244800.

The previous prime is 20601571961. The next prime is 20601571979. The reversal of 20601571970 is 7917510602.

It is an interprime number because it is at equal distance from previous prime (20601571961) and next prime (20601571979).

It is not an unprimeable number, because it can be changed into a prime (20601571979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79121 + ... + 217860.

It is an arithmetic number, because the mean of its divisors is an integer number (1325727648).

Almost surely, 2^20601571970 is an apocalyptic number.

20601571970 is an abundant number, since it is smaller than the sum of its proper divisors (21821712766).

20601571970 is a wasteful number, since it uses less digits than its factorization.

20601571970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297986.

The product of its (nonzero) digits is 26460, while the sum is 38.

The spelling of 20601571970 in words is "twenty billion, six hundred one million, five hundred seventy-one thousand, nine hundred seventy".