2721269145 has 48 divisors (see below), whose sum is σ = 5070212928. Its totient is φ = 1242702720.

The previous prime is 2721269113. The next prime is 2721269149. The reversal of 2721269145 is 5419621272.

It is not a de Polignac number, because 2721269145 - 2⁵ = 2721269113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2721269149) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1224135 + ... + 1226355.

It is an arithmetic number, because the mean of its divisors is an integer number (105629436).

Almost surely, 2^2721269145 is an apocalyptic number.

It is an amenable number.

2721269145 is a deficient number, since it is larger than the sum of its proper divisors (2348943783).

2721269145 is a wasteful number, since it uses less digits than its factorization.

2721269145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910 (or 3903 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 2721269145 is about 52165.7851948957. The cubic root of 2721269145 is about 1396.1234844025.

The spelling of 2721269145 in words is "two billion, seven hundred twenty-one million, two hundred sixty-nine thousand, one hundred forty-five".