1351705520761 has 4 divisors (see below), whose sum is σ = 1351708901712. Its totient is φ = 1351702139812.

The previous prime is 1351705520741. The next prime is 1351705520777. The reversal of 1351705520761 is 1670255071531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1351705520761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351705520731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995551 + ... + 1922116.

It is an arithmetic number, because the mean of its divisors is an integer number (337927225428).

Almost surely, 2^{1351705520761} is an apocalyptic number.

It is an amenable number.

1351705520761 is a deficient number, since it is larger than the sum of its proper divisors (3380951).

1351705520761 is an equidigital number, since it uses as much as digits as its factorization.

1351705520761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3380950.

The product of its (nonzero) digits is 220500, while the sum is 43.

The spelling of 1351705520761 in words is "one trillion, three hundred fifty-one billion, seven hundred five million, five hundred twenty thousand, seven hundred sixty-one".