66284031177276 has 108 divisors (see below), whose sum is σ = 177713914495656. Its totient is φ = 19212762437440.

The previous prime is 66284031177271. The next prime is 66284031177421. The reversal of 66284031177276 is 67277113048266.

It is a super-2 number, since 2×66284031177276² (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 (66284031177271) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 42379491 + ... + 43915706.

Almost surely, 2^{66284031177276} is an apocalyptic number.

66284031177276 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

66284031177276 is an abundant number, since it is smaller than the sum of its proper divisors (111429883318380).

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

66284031177276 is a wasteful number, since it uses less digits than its factorization.

66284031177276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86295272 (or 86295236 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 60.

The spelling of 66284031177276 in words is "sixty-six trillion, two hundred eighty-four billion, thirty-one million, one hundred seventy-seven thousand, two hundred seventy-six".