66161451354 has 16 divisors (see below), whose sum is σ = 133997877120. Its totient is φ = 21774654720.

The previous prime is 66161451341. The next prime is 66161451359. The reversal of 66161451354 is 45315416166.

It is not an unprimeable number, because it can be changed into a prime (66161451359) 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, 69790087 + ... + 69791034.

It is an arithmetic number, because the mean of its divisors is an integer number (8374867320).

Almost surely, 2^66161451354 is an apocalyptic number.

66161451354 is an abundant number, since it is smaller than the sum of its proper divisors (67836425766).

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

66161451354 is a wasteful number, since it uses less digits than its factorization.

66161451354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139581205.

The product of its digits is 259200, while the sum is 42.

The spelling of 66161451354 in words is "sixty-six billion, one hundred sixty-one million, four hundred fifty-one thousand, three hundred fifty-four".