66060506431 has 8 divisors (see below), whose sum is σ = 70000123104. Its totient is φ = 62126856960.

The previous prime is 66060506423. The next prime is 66060506443. The reversal of 66060506431 is 13460506066.

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 66060506431 - 2³ = 66060506423 is a prime.

It is a super-2 number, since 2×66060506431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66060506401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1468990 + ... + 1513291.

It is an arithmetic number, because the mean of its divisors is an integer number (8750015388).

Almost surely, 2^66060506431 is an apocalyptic number.

66060506431 is a deficient number, since it is larger than the sum of its proper divisors (3939616673).

66060506431 is a wasteful number, since it uses less digits than its factorization.

66060506431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983601.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 66060506431 in words is "sixty-six billion, sixty million, five hundred six thousand, four hundred thirty-one".