2687655340801 has 4 divisors (see below), whose sum is σ = 2687826861504. Its totient is φ = 2687483820100.

The previous prime is 2687655340757. The next prime is 2687655340831. The reversal of 2687655340801 is 1080435567862.

It is a happy number.

2687655340801 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 2687655340801 - 2⁹ = 2687655340289 is a prime.

It is a super-2 number, since 2×2687655340801² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2687655340831) 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, 85736845 + ... + 85768186.

It is an arithmetic number, because the mean of its divisors is an integer number (671956715376).

Almost surely, 2^{2687655340801} is an apocalyptic number.

It is an amenable number.

2687655340801 is a deficient number, since it is larger than the sum of its proper divisors (171520703).

2687655340801 is a wasteful number, since it uses less digits than its factorization.

2687655340801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171520702.

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 2687655340801 in words is "two trillion, six hundred eighty-seven billion, six hundred fifty-five million, three hundred forty thousand, eight hundred one".