66540150101255 has 8 divisors (see below), whose sum is σ = 79848230026032. Its totient is φ = 53232086811328.

The previous prime is 66540150101221. The next prime is 66540150101267. The reversal of 66540150101255 is 55210105104566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66540150101255 - 2¹⁴ = 66540150084871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7732307 + ... + 13887723.

It is an arithmetic number, because the mean of its divisors is an integer number (9981028753254).

Almost surely, 2^{66540150101255} is an apocalyptic number.

66540150101255 is a deficient number, since it is larger than the sum of its proper divisors (13308079924777).

66540150101255 is a wasteful number, since it uses less digits than its factorization.

66540150101255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8317425.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 66540150101255 in words is "sixty-six trillion, five hundred forty billion, one hundred fifty million, one hundred one thousand, two hundred fifty-five".