2451020647 has 8 divisors (see below), whose sum is σ = 2470266000. Its totient is φ = 2431812864.

The previous prime is 2451020633. The next prime is 2451020659. The reversal of 2451020647 is 7460201542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2451020647 - 2⁷ = 2451020519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451020617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129568 + ... + 147274.

It is an arithmetic number, because the mean of its divisors is an integer number (308783250).

Almost surely, 2^2451020647 is an apocalyptic number.

2451020647 is a deficient number, since it is larger than the sum of its proper divisors (19245353).

2451020647 is a wasteful number, since it uses less digits than its factorization.

2451020647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18785.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 2451020647 is about 49507.7837011515. The cubic root of 2451020647 is about 1348.2869257985.

The spelling of 2451020647 in words is "two billion, four hundred fifty-one million, twenty thousand, six hundred forty-seven".