66057115100015 has 64 divisors (see below), whose sum is σ = 87527451809280. Its totient is φ = 47562593886720.

The previous prime is 66057115099993. The next prime is 66057115100023. The reversal of 66057115100015 is 51000151175066.

It is not a de Polignac number, because 66057115100015 - 2⁶ = 66057115099951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 200204357 + ... + 200534033.

It is an arithmetic number, because the mean of its divisors is an integer number (1367616434520).

Almost surely, 2^{66057115100015} is an apocalyptic number.

66057115100015 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66057115100015 is a deficient number, since it is larger than the sum of its proper divisors (21470336709265).

66057115100015 is a wasteful number, since it uses less digits than its factorization.

66057115100015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330232.

The product of its (nonzero) digits is 31500, while the sum is 38.

The spelling of 66057115100015 in words is "sixty-six trillion, fifty-seven billion, one hundred fifteen million, one hundred thousand, fifteen".