1340302872761 has 4 divisors (see below), whose sum is σ = 1348839833892. Its totient is φ = 1331765911632.

The previous prime is 1340302872751. The next prime is 1340302872791. The reversal of 1340302872761 is 1672782030431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 565137083536 + 775165789225 = 751756^2 + 880435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340302872761 - 2³⁸ = 1065424965817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340302872751) 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, 4268480330 + ... + 4268480643.

It is an arithmetic number, because the mean of its divisors is an integer number (337209958473).

Almost surely, 2^{1340302872761} is an apocalyptic number.

It is an amenable number.

1340302872761 is a deficient number, since it is larger than the sum of its proper divisors (8536961131).

1340302872761 is an equidigital number, since it uses as much as digits as its factorization.

1340302872761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536961130.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 1340302872761 in words is "one trillion, three hundred forty billion, three hundred two million, eight hundred seventy-two thousand, seven hundred sixty-one".