145546376691 has 8 divisors (see below), whose sum is σ = 194762420944. Its totient is φ = 96680625120.

The previous prime is 145546376687. The next prime is 145546376749. The reversal of 145546376691 is 196673645541.

It is a happy number.

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

It is not a de Polignac number, because 145546376691 - 2² = 145546376687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145546376621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87572200 + ... + 87573861.

It is an arithmetic number, because the mean of its divisors is an integer number (24345302618).

Almost surely, 2^145546376691 is an apocalyptic number.

145546376691 is a deficient number, since it is larger than the sum of its proper divisors (49216044253).

145546376691 is a wasteful number, since it uses less digits than its factorization.

145546376691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175146341.

The product of its digits is 16329600, while the sum is 57.

The spelling of 145546376691 in words is "one hundred forty-five billion, five hundred forty-six million, three hundred seventy-six thousand, six hundred ninety-one".