66135431064270 has 16 divisors (see below), whose sum is σ = 158725034554320. Its totient is φ = 17636114950464.

The previous prime is 66135431064253. The next prime is 66135431064271. The reversal of 66135431064270 is 7246013453166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66135431064271) 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, 1102257184375 + ... + 1102257184434.

It is an arithmetic number, because the mean of its divisors is an integer number (9920314659645).

Almost surely, 2^{66135431064270} is an apocalyptic number.

66135431064270 is an abundant number, since it is smaller than the sum of its proper divisors (92589603490050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66135431064270 is a wasteful number, since it uses less digits than its factorization.

66135431064270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204514368819.

The product of its (nonzero) digits is 2177280, while the sum is 48.

The spelling of 66135431064270 in words is "sixty-six trillion, one hundred thirty-five billion, four hundred thirty-one million, sixty-four thousand, two hundred seventy".