2861712656361 has 80 divisors (see below), whose sum is σ = 4811716635264. Its totient is φ = 1681747474176.

The previous prime is 2861712656323. The next prime is 2861712656371. The reversal of 2861712656361 is 1636562171682.

It is a happy number.

2861712656361 is a `hidden beast` number, since 2 + 8 + 6 + 1 + 7 + 12 + 6 + 563 + 61 = 666.

It is not a de Polignac number, because 2861712656361 - 2²³ = 2861704267753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2861712656298 and 2861712656307.

It is not an unprimeable number, because it can be changed into a prime (2861712656321) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14847370 + ... + 15038876.

Almost surely, 2^{2861712656361} is an apocalyptic number.

It is an amenable number.

2861712656361 is a deficient number, since it is larger than the sum of its proper divisors (1950003978903).

2861712656361 is a wasteful number, since it uses less digits than its factorization.

2861712656361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192172 (or 192163 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The spelling of 2861712656361 in words is "two trillion, eight hundred sixty-one billion, seven hundred twelve million, six hundred fifty-six thousand, three hundred sixty-one".