66013070652 has 72 divisors (see below), whose sum is σ = 172312183680. Its totient is φ = 21286748160.

The previous prime is 66013070633. The next prime is 66013070657. The reversal of 66013070652 is 25607031066.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66013070657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3572028 + ... + 3590460.

Almost surely, 2^66013070652 is an apocalyptic number.

66013070652 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66013070652 is an abundant number, since it is smaller than the sum of its proper divisors (106299113028).

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

66013070652 is a wasteful number, since it uses less digits than its factorization.

66013070652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21683 (or 21678 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 66013070652 in words is "sixty-six billion, thirteen million, seventy thousand, six hundred fifty-two".