66987031103 has 8 divisors (see below), whose sum is σ = 67431160368. Its totient is φ = 66543306624.

The previous prime is 66987031087. The next prime is 66987031109. The reversal of 66987031103 is 30113078966.

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 66987031103 - 2⁴ = 66987031087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66987031109) 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, 234551 + ... + 434727.

It is an arithmetic number, because the mean of its divisors is an integer number (8428895046).

Almost surely, 2^66987031103 is an apocalyptic number.

66987031103 is a deficient number, since it is larger than the sum of its proper divisors (444129265).

66987031103 is a wasteful number, since it uses less digits than its factorization.

66987031103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202393.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 66987031103 in words is "sixty-six billion, nine hundred eighty-seven million, thirty-one thousand, one hundred three".