20610146738957 has 2 divisors, whose sum is σ = 20610146738958. Its totient is φ = 20610146738956.

The previous prime is 20610146738917. The next prime is 20610146738999. The reversal of 20610146738957 is 75983764101602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12564834285481 + 8045312453476 = 3544691^2 + 2836426^2 .

It is a cyclic number.

It is not a de Polignac number, because 20610146738957 - 2²⁶ = 20610079630093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20610146738896 and 20610146738905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20610146738917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10305073369478 + 10305073369479.

It is an arithmetic number, because the mean of its divisors is an integer number (10305073369479).

It is a 1-persistent number, because it is pandigital, but 2⋅20610146738957 = 41220293477914 is not.

Almost surely, 2^{20610146738957} is an apocalyptic number.

It is an amenable number.

20610146738957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20610146738957 is an equidigital number, since it uses as much as digits as its factorization.

20610146738957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 20610146738957 in words is "twenty trillion, six hundred ten billion, one hundred forty-six million, seven hundred thirty-eight thousand, nine hundred fifty-seven".