66530453722 has 16 divisors (see below), whose sum is σ = 102127243680. Its totient is φ = 32488201872.

The previous prime is 66530453711. The next prime is 66530453747. The reversal of 66530453722 is 22735403566.

It is a Harshad number since it is a multiple of its sum of digits (43).

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, 911104 + ... + 981412.

It is an arithmetic number, because the mean of its divisors is an integer number (6382952730).

Almost surely, 2^66530453722 is an apocalyptic number.

66530453722 is a deficient number, since it is larger than the sum of its proper divisors (35596789958).

66530453722 is a wasteful number, since it uses less digits than its factorization.

66530453722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81357.

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 66530453722 in words is "sixty-six billion, five hundred thirty million, four hundred fifty-three thousand, seven hundred twenty-two".