66019497552 has 120 divisors (see below), whose sum is σ = 201303584000. Its totient is φ = 20711960064.

The previous prime is 66019497547. The next prime is 66019497641. The reversal of 66019497552 is 25579491066.

66019497552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139552 + ... + 389247.

Almost surely, 2^66019497552 is an apocalyptic number.

It is an amenable number.

66019497552 is an abundant number, since it is smaller than the sum of its proper divisors (135284086448).

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

66019497552 is a wasteful number, since it uses less digits than its factorization.

66019497552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528850 (or 528821 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 66019497552 in words is "sixty-six billion, nineteen million, four hundred ninety-seven thousand, five hundred fifty-two".