2681155801 has 4 divisors (see below), whose sum is σ = 2702267392. Its totient is φ = 2660044212.

The previous prime is 2681155787. The next prime is 2681155819. The reversal of 2681155801 is 1085511862.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1085511862 = 2 ⋅542755931.

It is a cyclic number.

It is not a de Polignac number, because 2681155801 - 2⁵ = 2681155769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2681155201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10555605 + ... + 10555858.

It is an arithmetic number, because the mean of its divisors is an integer number (675566848).

Almost surely, 2^2681155801 is an apocalyptic number.

It is an amenable number.

2681155801 is a deficient number, since it is larger than the sum of its proper divisors (21111591).

2681155801 is a wasteful number, since it uses less digits than its factorization.

2681155801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21111590.

The product of its (nonzero) digits is 19200, while the sum is 37.

The square root of 2681155801 is about 51779.8783409154. The cubic root of 2681155801 is about 1389.2295647687.

The spelling of 2681155801 in words is "two billion, six hundred eighty-one million, one hundred fifty-five thousand, eight hundred one".