2587007978669 has 2 divisors, whose sum is σ = 2587007978670. Its totient is φ = 2587007978668.

The previous prime is 2587007978647. The next prime is 2587007978689. The reversal of 2587007978669 is 9668797007852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2553725449444 + 33282529225 = 1598038^2 + 182435^2 .

It is a cyclic number.

It is not a de Polignac number, because 2587007978669 - 2²⁴ = 2586991201453 is a prime.

It is a super-2 number, since 2×2587007978669² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2587007978596 and 2587007978605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2587007978689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1293503989334 + 1293503989335.

It is an arithmetic number, because the mean of its divisors is an integer number (1293503989335).

Almost surely, 2^{2587007978669} is an apocalyptic number.

It is an amenable number.

2587007978669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2587007978669 is an equidigital number, since it uses as much as digits as its factorization.

2587007978669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640120320, while the sum is 74.

The spelling of 2587007978669 in words is "two trillion, five hundred eighty-seven billion, seven million, nine hundred seventy-eight thousand, six hundred sixty-nine".