10155777493 has 2 divisors, whose sum is σ = 10155777494. Its totient is φ = 10155777492.

The previous prime is 10155777431. The next prime is 10155777497. The reversal of 10155777493 is 39477755101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9232711569 + 923065924 = 96087^2 + 30382^2 .

It is a cyclic number.

It is not a de Polignac number, because 10155777493 - 2²⁵ = 10122223061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10155777497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077888746 + 5077888747.

It is an arithmetic number, because the mean of its divisors is an integer number (5077888747).

Almost surely, 2^10155777493 is an apocalyptic number.

It is an amenable number.

10155777493 is a deficient number, since it is larger than the sum of its proper divisors (1).

10155777493 is an equidigital number, since it uses as much as digits as its factorization.

10155777493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 926100, while the sum is 49.

The spelling of 10155777493 in words is "ten billion, one hundred fifty-five million, seven hundred seventy-seven thousand, four hundred ninety-three".