20966579737527 has 32 divisors (see below), whose sum is σ = 28413922222080. Its totient is φ = 13749799714560.

The previous prime is 20966579737513. The next prime is 20966579737529. The reversal of 20966579737527 is 72573797566902.

It is not a de Polignac number, because 20966579737527 - 2¹⁶ = 20966579671991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20966579737529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625795258 + ... + 625828760.

It is an arithmetic number, because the mean of its divisors is an integer number (887935069440).

Almost surely, 2^{20966579737527} is an apocalyptic number.

20966579737527 is a deficient number, since it is larger than the sum of its proper divisors (7447342484553).

20966579737527 is a wasteful number, since it uses less digits than its factorization.

20966579737527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43263.

The product of its (nonzero) digits is 2100394800, while the sum is 75.

The spelling of 20966579737527 in words is "twenty trillion, nine hundred sixty-six billion, five hundred seventy-nine million, seven hundred thirty-seven thousand, five hundred twenty-seven".