66145954154 has 8 divisors (see below), whose sum is σ = 113393064288. Its totient is φ = 28348266060.

The previous prime is 66145954139. The next prime is 66145954157. The reversal of 66145954154 is 45145954166.

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 (66145954157) 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, 2362355492 + ... + 2362355519.

It is an arithmetic number, because the mean of its divisors is an integer number (14174133036).

Almost surely, 2^66145954154 is an apocalyptic number.

66145954154 is a deficient number, since it is larger than the sum of its proper divisors (47247110134).

66145954154 is a wasteful number, since it uses less digits than its factorization.

66145954154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724711020.

The product of its digits is 2592000, while the sum is 50.

The spelling of 66145954154 in words is "sixty-six billion, one hundred forty-five million, nine hundred fifty-four thousand, one hundred fifty-four".