2670721355 has 4 divisors (see below), whose sum is σ = 3204865632. Its totient is φ = 2136577080.

The previous prime is 2670721351. The next prime is 2670721381. The reversal of 2670721355 is 5531270762.

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

It is not a de Polignac number, because 2670721355 - 2² = 2670721351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2670721351) 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, 267072131 + ... + 267072140.

It is an arithmetic number, because the mean of its divisors is an integer number (801216408).

Almost surely, 2^2670721355 is an apocalyptic number.

2670721355 is a deficient number, since it is larger than the sum of its proper divisors (534144277).

2670721355 is an equidigital number, since it uses as much as digits as its factorization.

2670721355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534144276.

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 2670721355 is about 51679.0223881993. The cubic root of 2670721355 is about 1387.4250337442.

The spelling of 2670721355 in words is "two billion, six hundred seventy million, seven hundred twenty-one thousand, three hundred fifty-five".