2781320701 has 16 divisors (see below), whose sum is σ = 2966519808. Its totient is φ = 2602076400.

The previous prime is 2781320693. The next prime is 2781320741. The reversal of 2781320701 is 1070231872.

It is a cyclic number.

It is not a de Polignac number, because 2781320701 - 2³ = 2781320693 is a prime.

It is a super-2 number, since 2×2781320701² = 15471489683622262802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781320741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200686 + ... + 214096.

It is an arithmetic number, because the mean of its divisors is an integer number (185407488).

Almost surely, 2^2781320701 is an apocalyptic number.

It is an amenable number.

2781320701 is a deficient number, since it is larger than the sum of its proper divisors (185199107).

2781320701 is a wasteful number, since it uses less digits than its factorization.

2781320701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13632.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 2781320701 is about 52738.2280798284. The cubic root of 2781320701 is about 1406.3184983628.

The spelling of 2781320701 in words is "two billion, seven hundred eighty-one million, three hundred twenty thousand, seven hundred one".