20651652260031 has 48 divisors (see below), whose sum is σ = 30390617870496. Its totient is φ = 12464220907008.

The previous prime is 20651652260017. The next prime is 20651652260033. The reversal of 20651652260031 is 13006225615602.

It is not a de Polignac number, because 20651652260031 - 2⁶ = 20651652259967 is a prime.

It is a super-2 number, since 2×20651652260031² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20651652260033) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71790121 + ... + 72077213.

It is an arithmetic number, because the mean of its divisors is an integer number (633137872302).

Almost surely, 2^{20651652260031} is an apocalyptic number.

20651652260031 is a deficient number, since it is larger than the sum of its proper divisors (9738965610465).

20651652260031 is a wasteful number, since it uses less digits than its factorization.

20651652260031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289852 (or 289839 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 20651652260031 its reverse (13006225615602), we get a palindrome (33657877875633).

The spelling of 20651652260031 in words is "twenty trillion, six hundred fifty-one billion, six hundred fifty-two million, two hundred sixty thousand, thirty-one".