12752257772061 has 6 divisors (see below), whose sum is σ = 18419927892990. Its totient is φ = 8501505181368.

The previous prime is 12752257772003. The next prime is 12752257772117. The reversal of 12752257772061 is 16027775225721.

12752257772061 is a `hidden beast` number, since 1 + 2 + 7 + 5 + 2 + 2 + 577 + 7 + 2 + 0 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10598892292836 + 2153365479225 = 3255594^2 + 1467435^2 .

It is not a de Polignac number, because 12752257772061 - 2⁶ = 12752257771997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12752257771989 and 12752257772007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12752257772861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708458765106 + ... + 708458765123.

It is an arithmetic number, because the mean of its divisors is an integer number (3069987982165).

Almost surely, 2^{12752257772061} is an apocalyptic number.

It is an amenable number.

12752257772061 is a deficient number, since it is larger than the sum of its proper divisors (5667670120929).

12752257772061 is a wasteful number, since it uses less digits than its factorization.

12752257772061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416917530235 (or 1416917530232 counting only the distinct ones).

The product of its (nonzero) digits is 5762400, while the sum is 54.

The spelling of 12752257772061 in words is "twelve trillion, seven hundred fifty-two billion, two hundred fifty-seven million, seven hundred seventy-two thousand, sixty-one".