2601220313761 has 4 divisors (see below), whose sum is σ = 2754233273412. Its totient is φ = 2448207354112.

The previous prime is 2601220313753. The next prime is 2601220313801. The reversal of 2601220313761 is 1673130221062.

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 1380051659536 + 1221168654225 = 1174756^2 + 1105065^2 .

It is a cyclic number.

It is not a de Polignac number, because 2601220313761 - 2³ = 2601220313753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2601220313261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76506479800 + ... + 76506479833.

It is an arithmetic number, because the mean of its divisors is an integer number (688558318353).

Almost surely, 2^{2601220313761} is an apocalyptic number.

It is an amenable number.

2601220313761 is a deficient number, since it is larger than the sum of its proper divisors (153012959651).

2601220313761 is a wasteful number, since it uses less digits than its factorization.

2601220313761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153012959650.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 2601220313761 in words is "two trillion, six hundred one billion, two hundred twenty million, three hundred thirteen thousand, seven hundred sixty-one".