1315652561261 has 8 divisors (see below), whose sum is σ = 1400740266744. Its totient is φ = 1231420008960.

The previous prime is 1315652561161. The next prime is 1315652561269. The reversal of 1315652561261 is 1621652565131.

It can be written as a sum of positive squares in 4 ways, for example, as 26051574025 + 1289600987236 = 161405^2 + 1135606^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1315652561261 - 2²² = 1315648366957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315652561269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213785120 + ... + 213791273.

It is an arithmetic number, because the mean of its divisors is an integer number (175092533343).

Almost surely, 2^{1315652561261} is an apocalyptic number.

It is an amenable number.

1315652561261 is a deficient number, since it is larger than the sum of its proper divisors (85087705483).

1315652561261 is a wasteful number, since it uses less digits than its factorization.

1315652561261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427576591.

The product of its digits is 324000, while the sum is 44.

The spelling of 1315652561261 in words is "one trillion, three hundred fifteen billion, six hundred fifty-two million, five hundred sixty-one thousand, two hundred sixty-one".