66014015551505 has 16 divisors (see below), whose sum is σ = 93655352113920. Its totient is φ = 43705830985152.

The previous prime is 66014015551493. The next prime is 66014015551507. The reversal of 66014015551505 is 50515551041066.

It is not a de Polignac number, because 66014015551505 - 2¹² = 66014015547409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66014015551507) 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, 32519218469 + ... + 32519220498.

It is an arithmetic number, because the mean of its divisors is an integer number (5853459507120).

Almost surely, 2^{66014015551505} is an apocalyptic number.

It is an amenable number.

66014015551505 is a deficient number, since it is larger than the sum of its proper divisors (27641336562415).

66014015551505 is a wasteful number, since it uses less digits than its factorization.

66014015551505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65038439008.

The product of its (nonzero) digits is 450000, while the sum is 44.

The spelling of 66014015551505 in words is "sixty-six trillion, fourteen billion, fifteen million, five hundred fifty-one thousand, five hundred five".