11737998791977 has 2 divisors, whose sum is σ = 11737998791978. Its totient is φ = 11737998791976.

The previous prime is 11737998791947. The next prime is 11737998792011. The reversal of 11737998791977 is 77919789973711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11199002013081 + 538996778896 = 3346491^2 + 734164^2 .

It is a cyclic number.

It is not a de Polignac number, because 11737998791977 - 2¹¹ = 11737998789929 is a prime.

It is a super-2 number, since 2×11737998791977² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11737998791894 and 11737998791903.

It is not a weakly prime, because it can be changed into another prime (11737998791917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5868999395988 + 5868999395989.

It is an arithmetic number, because the mean of its divisors is an integer number (5868999395989).

Almost surely, 2^{11737998791977} is an apocalyptic number.

It is an amenable number.

11737998791977 is a deficient number, since it is larger than the sum of its proper divisors (1).

11737998791977 is an equidigital number, since it uses as much as digits as its factorization.

11737998791977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646497448, while the sum is 85.

The spelling of 11737998791977 in words is "eleven trillion, seven hundred thirty-seven billion, nine hundred ninety-eight million, seven hundred ninety-one thousand, nine hundred seventy-seven".