66621132342 has 16 divisors (see below), whose sum is σ = 148046960880. Its totient is φ = 22207044096.

The previous prime is 66621132317. The next prime is 66621132421. The reversal of 66621132342 is 24323112666.

It is a junction number, because it is equal to n+sod(n) for n = 66621132297 and 66621132306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 616862283 + ... + 616862390.

It is an arithmetic number, because the mean of its divisors is an integer number (9252935055).

Almost surely, 2^66621132342 is an apocalyptic number.

66621132342 is an abundant number, since it is smaller than the sum of its proper divisors (81425828538).

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

66621132342 is a wasteful number, since it uses less digits than its factorization.

66621132342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233724684 (or 1233724678 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The spelling of 66621132342 in words is "sixty-six billion, six hundred twenty-one million, one hundred thirty-two thousand, three hundred forty-two".