66542201473 has 8 divisors (see below), whose sum is σ = 73296265536. Its totient is φ = 59905599600.

The previous prime is 66542201461. The next prime is 66542201497. The reversal of 66542201473 is 37410224566.

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

It is not a de Polignac number, because 66542201473 - 2⁵ = 66542201441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66542201273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29364358 + ... + 29366623.

It is an arithmetic number, because the mean of its divisors is an integer number (9162033192).

Almost surely, 2^66542201473 is an apocalyptic number.

It is an amenable number.

66542201473 is a deficient number, since it is larger than the sum of its proper divisors (6754064063).

66542201473 is a wasteful number, since it uses less digits than its factorization.

66542201473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58731095.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 66542201473 in words is "sixty-six billion, five hundred forty-two million, two hundred one thousand, four hundred seventy-three".