2861978416695 has 24 divisors (see below), whose sum is σ = 4960942564032. Its totient is φ = 1526333112000.

The previous prime is 2861978416541. The next prime is 2861978416697. The reversal of 2861978416695 is 5966148791682.

2861978416695 is a `hidden beast` number, since 2 + 8 + 61 + 97 + 8 + 416 + 69 + 5 = 666.

It is not a de Polignac number, because 2861978416695 - 2¹⁰ = 2861978415671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861978416697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115810 + ... + 2395280.

It is an arithmetic number, because the mean of its divisors is an integer number (206705940168).

Almost surely, 2^{2861978416695} is an apocalyptic number.

2861978416695 is a deficient number, since it is larger than the sum of its proper divisors (2098964147337).

2861978416695 is a wasteful number, since it uses less digits than its factorization.

2861978416695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307383 (or 2307380 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 72.

The spelling of 2861978416695 in words is "two trillion, eight hundred sixty-one billion, nine hundred seventy-eight million, four hundred sixteen thousand, six hundred ninety-five".