2157075705007 has 2 divisors, whose sum is σ = 2157075705008. Its totient is φ = 2157075705006.

The previous prime is 2157075704989. The next prime is 2157075705061. The reversal of 2157075705007 is 7005075707512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2157075705007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2157075705107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078537852503 + 1078537852504.

It is an arithmetic number, because the mean of its divisors is an integer number (1078537852504).

Almost surely, 2^{2157075705007} is an apocalyptic number.

2157075705007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2157075705007 is an equidigital number, since it uses as much as digits as its factorization.

2157075705007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600250, while the sum is 46.

The spelling of 2157075705007 in words is "two trillion, one hundred fifty-seven billion, seventy-five million, seven hundred five thousand, seven".