10617381787 has 2 divisors, whose sum is σ = 10617381788. Its totient is φ = 10617381786.

The previous prime is 10617381763. The next prime is 10617381791. The reversal of 10617381787 is 78718371601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10617381787 is a prime.

It is a super-2 number, since 2×10617381787² (a number of 21 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 10617381787.

It is not a weakly prime, because it can be changed into another prime (10617381707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5308690893 + 5308690894.

It is an arithmetic number, because the mean of its divisors is an integer number (5308690894).

Almost surely, 2^10617381787 is an apocalyptic number.

10617381787 is a deficient number, since it is larger than the sum of its proper divisors (1).

10617381787 is an equidigital number, since it uses as much as digits as its factorization.

10617381787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 10617381787 in words is "ten billion, six hundred seventeen million, three hundred eighty-one thousand, seven hundred eighty-seven".