7021515016001 has 4 divisors (see below), whose sum is σ = 7136621819604. Its totient is φ = 6906408212400.

The previous prime is 7021515015989. The next prime is 7021515016013. The reversal of 7021515016001 is 1006105151207.

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

It is an interprime number because it is at equal distance from previous prime (7021515015989) and next prime (7021515016013).

It can be written as a sum of positive squares in 2 ways, for example, as 430074951601 + 6591440064400 = 655801^2 + 2567380^2 .

It is a cyclic number.

It is not a de Polignac number, because 7021515016001 - 2²⁶ = 7021447907137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7021515046001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57553401710 + ... + 57553401831.

It is an arithmetic number, because the mean of its divisors is an integer number (1784155454901).

Almost surely, 2^{7021515016001} is an apocalyptic number.

It is an amenable number.

7021515016001 is a deficient number, since it is larger than the sum of its proper divisors (115106803603).

7021515016001 is a wasteful number, since it uses less digits than its factorization.

7021515016001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115106803602.

The product of its (nonzero) digits is 2100, while the sum is 29.

The spelling of 7021515016001 in words is "seven trillion, twenty-one billion, five hundred fifteen million, sixteen thousand, one".