2072644451 has 2 divisors, whose sum is σ = 2072644452. Its totient is φ = 2072644450.

The previous prime is 2072644391. The next prime is 2072644477. The reversal of 2072644451 is 1544462702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2072644451 is a prime.

It is a super-2 number, since 2×2072644451² = 8591710040522182802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2072644481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036322225 + 1036322226.

It is an arithmetic number, because the mean of its divisors is an integer number (1036322226).

Almost surely, 2^2072644451 is an apocalyptic number.

2072644451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2072644451 is an equidigital number, since it uses as much as digits as its factorization.

2072644451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 2072644451 is about 45526.3050444466. The cubic root of 2072644451 is about 1274.9943767021.

The spelling of 2072644451 in words is "two billion, seventy-two million, six hundred forty-four thousand, four hundred fifty-one".