66133240445415 has 64 divisors (see below), whose sum is σ = 124341184783872. Its totient is φ = 29591143257600.

The previous prime is 66133240445413. The next prime is 66133240445453. The reversal of 66133240445415 is 51454404233166.

It is not a de Polignac number, because 66133240445415 - 2¹ = 66133240445413 is a prime.

It is a super-2 number, since 2×66133240445415² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66133240445413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5521992 + ... + 12757698.

It is an arithmetic number, because the mean of its divisors is an integer number (1942831012248).

Almost surely, 2^{66133240445415} is an apocalyptic number.

66133240445415 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66133240445415 is a deficient number, since it is larger than the sum of its proper divisors (58207944338457).

66133240445415 is a wasteful number, since it uses less digits than its factorization.

66133240445415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7240000.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 66133240445415 in words is "sixty-six trillion, one hundred thirty-three billion, two hundred forty million, four hundred forty-five thousand, four hundred fifteen".