66290782652 has 12 divisors (see below), whose sum is σ = 118197716616. Its totient is φ = 32520006480.

The previous prime is 66290782639. The next prime is 66290782661. The reversal of 66290782652 is 25628709266.

It is a super-2 number, since 2×66290782652² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a junction number, because it is equal to n+sod(n) for n = 66290782594 and 66290782603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156345974 + ... + 156346397.

It is an arithmetic number, because the mean of its divisors is an integer number (9849809718).

Almost surely, 2^66290782652 is an apocalyptic number.

It is an amenable number.

66290782652 is a deficient number, since it is larger than the sum of its proper divisors (51906933964).

66290782652 is a wasteful number, since it uses less digits than its factorization.

66290782652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312692428 (or 312692426 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 66290782652 in words is "sixty-six billion, two hundred ninety million, seven hundred eighty-two thousand, six hundred fifty-two".