10612820687957 has 2 divisors, whose sum is σ = 10612820687958. Its totient is φ = 10612820687956.

The previous prime is 10612820687939. The next prime is 10612820688007. The reversal of 10612820687957 is 75978602821601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5618672899876 + 4994147788081 = 2370374^2 + 2234759^2 .

It is an emirp because it is prime and its reverse (75978602821601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10612820687957 - 2¹⁸ = 10612820425813 is a prime.

It is a super-2 number, since 2×10612820687957² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10612820687957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10612820684957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5306410343978 + 5306410343979.

It is an arithmetic number, because the mean of its divisors is an integer number (5306410343979).

Almost surely, 2^{10612820687957} is an apocalyptic number.

It is an amenable number.

10612820687957 is a deficient number, since it is larger than the sum of its proper divisors (1).

10612820687957 is an equidigital number, since it uses as much as digits as its factorization.

10612820687957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 10612820687957 in words is "ten trillion, six hundred twelve billion, eight hundred twenty million, six hundred eighty-seven thousand, nine hundred fifty-seven".