20712205103926 has 16 divisors (see below), whose sum is σ = 36088713344160. Its totient is φ = 8731140324480.

The previous prime is 20712205103879. The next prime is 20712205103927. The reversal of 20712205103926 is 62930150221702.

It is a super-2 number, since 2×20712205103926² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20712205103927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12126582931 + ... + 12126584638.

It is an arithmetic number, because the mean of its divisors is an integer number (2255544584010).

Almost surely, 2^{20712205103926} is an apocalyptic number.

20712205103926 is a deficient number, since it is larger than the sum of its proper divisors (15376508240234).

20712205103926 is a wasteful number, since it uses less digits than its factorization.

20712205103926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24253167639.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 20712205103926 in words is "twenty trillion, seven hundred twelve billion, two hundred five million, one hundred three thousand, nine hundred twenty-six".