66675445402 has 8 divisors (see below), whose sum is σ = 100014477300. Its totient is φ = 33337286304.

The previous prime is 66675445393. The next prime is 66675445409. The reversal of 66675445402 is 20454457666.

66675445402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 66197629521 + 477815881 = 257289^2 + 21859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66675445409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28624 + ... + 366292.

Almost surely, 2^66675445402 is an apocalyptic number.

66675445402 is a deficient number, since it is larger than the sum of its proper divisors (33339031898).

66675445402 is a wasteful number, since it uses less digits than its factorization.

66675445402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436400.

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 66675445402 in words is "sixty-six billion, six hundred seventy-five million, four hundred forty-five thousand, four hundred two".