1261164713588 has 12 divisors (see below), whose sum is σ = 2376810421860. Its totient is φ = 582076021632.

The previous prime is 1261164713537. The next prime is 1261164713593. The reversal of 1261164713588 is 8853174611621.

It can be written as a sum of positive squares in 2 ways, for example, as 707328096784 + 553836616804 = 841028^2 + 744202^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12126583733 + ... + 12126583836.

It is an arithmetic number, because the mean of its divisors is an integer number (198067535155).

Almost surely, 2^{1261164713588} is an apocalyptic number.

It is an amenable number.

1261164713588 is a deficient number, since it is larger than the sum of its proper divisors (1115645708272).

1261164713588 is a wasteful number, since it uses less digits than its factorization.

1261164713588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24253167586 (or 24253167584 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 53.

The spelling of 1261164713588 in words is "one trillion, two hundred sixty-one billion, one hundred sixty-four million, seven hundred thirteen thousand, five hundred eighty-eight".