1006720521015 has 16 divisors (see below), whose sum is σ = 1757184909696. Its totient is φ = 488106919200.

The previous prime is 1006720520989. The next prime is 1006720521017. The reversal of 1006720521015 is 5101250276001.

1006720521015 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1006720521015 - 2¹⁴ = 1006720504631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006720521017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3050668081 + ... + 3050668410.

It is an arithmetic number, because the mean of its divisors is an integer number (109824056856).

Almost surely, 2^{1006720521015} is an apocalyptic number.

1006720521015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1006720521015 is a deficient number, since it is larger than the sum of its proper divisors (750464388681).

1006720521015 is a wasteful number, since it uses less digits than its factorization.

1006720521015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101336510.

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 1006720521015 its reverse (5101250276001), we get a palindrome (6107970797016).

The spelling of 1006720521015 in words is "one trillion, six billion, seven hundred twenty million, five hundred twenty-one thousand, fifteen".