145691389617 has 8 divisors (see below), whose sum is σ = 194263124160. Its totient is φ = 97123624080.

The previous prime is 145691389583. The next prime is 145691389619. The reversal of 145691389617 is 716983196541.

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

It is not a de Polignac number, because 145691389617 - 2¹⁵ = 145691356849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145691389619) 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, 905517 + ... + 1054202.

It is an arithmetic number, because the mean of its divisors is an integer number (24282890520).

Almost surely, 2^145691389617 is an apocalyptic number.

It is an amenable number.

145691389617 is a deficient number, since it is larger than the sum of its proper divisors (48571734543).

145691389617 is a wasteful number, since it uses less digits than its factorization.

145691389617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984503.

The product of its digits is 9797760, while the sum is 60.

The spelling of 145691389617 in words is "one hundred forty-five billion, six hundred ninety-one million, three hundred eighty-nine thousand, six hundred seventeen".