647232166550 has 48 divisors (see below), whose sum is σ = 1234319064000. Its totient is φ = 252364926240.

The previous prime is 647232166547. The next prime is 647232166619. The reversal of 647232166550 is 55661232746.

It is a junction number, because it is equal to n+sod(n) for n = 647232166495 and 647232166504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 771209 + ... + 1374491.

It is an arithmetic number, because the mean of its divisors is an integer number (25714980500).

Almost surely, 2^647232166550 is an apocalyptic number.

647232166550 is a deficient number, since it is larger than the sum of its proper divisors (587086897450).

647232166550 is a wasteful number, since it uses less digits than its factorization.

647232166550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603837 (or 603832 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 647232166550 in words is "six hundred forty-seven billion, two hundred thirty-two million, one hundred sixty-six thousand, five hundred fifty".