66620227742 has 16 divisors (see below), whose sum is σ = 105816559680. Its totient is φ = 31348336128.

The previous prime is 66620227727. The next prime is 66620227747. The reversal of 66620227742 is 24772202666.

It is a junction number, because it is equal to n+sod(n) for n = 66620227693 and 66620227702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66620227747) 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, 435734 + ... + 568422.

It is an arithmetic number, because the mean of its divisors is an integer number (6613534980).

Almost surely, 2^66620227742 is an apocalyptic number.

66620227742 is a deficient number, since it is larger than the sum of its proper divisors (39196331938).

66620227742 is a wasteful number, since it uses less digits than its factorization.

66620227742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147475.

The product of its (nonzero) digits is 677376, while the sum is 44.

The spelling of 66620227742 in words is "sixty-six billion, six hundred twenty million, two hundred twenty-seven thousand, seven hundred forty-two".