665156615148 has 72 divisors (see below), whose sum is σ = 1698706900800. Its totient is φ = 219436408800.

The previous prime is 665156615147. The next prime is 665156615153. The reversal of 665156615148 is 841516651566.

It is a happy number.

665156615148 is a `hidden beast` number, since 6 + 6 + 5 + 1 + 5 + 6 + 615 + 14 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 665156615094 and 665156615103.

It is not an unprimeable number, because it can be changed into a prime (665156615147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3966303 + ... + 4130601.

It is an arithmetic number, because the mean of its divisors is an integer number (23593151400).

Almost surely, 2^665156615148 is an apocalyptic number.

It is an amenable number.

665156615148 is an abundant number, since it is smaller than the sum of its proper divisors (1033550285652).

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

665156615148 is a wasteful number, since it uses less digits than its factorization.

665156615148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165467 (or 165462 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 54.

The spelling of 665156615148 in words is "six hundred sixty-five billion, one hundred fifty-six million, six hundred fifteen thousand, one hundred forty-eight".