7001661515 has 24 divisors (see below), whose sum is σ = 8658452880. Its totient is φ = 5435284608.

The previous prime is 7001661479. The next prime is 7001661517. The reversal of 7001661515 is 5151661007.

It is not a de Polignac number, because 7001661515 - 2¹² = 7001657419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7001661517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3031181 + ... + 3033489.

It is an arithmetic number, because the mean of its divisors is an integer number (360768870).

Almost surely, 2^7001661515 is an apocalyptic number.

7001661515 is a deficient number, since it is larger than the sum of its proper divisors (1656791365).

7001661515 is a wasteful number, since it uses less digits than its factorization.

7001661515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831 (or 2794 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 7001661515 is about 83675.9315155798. The cubic root of 7001661515 is about 1913.0825214589.

The spelling of 7001661515 in words is "seven billion, one million, six hundred sixty-one thousand, five hundred fifteen".