145642172671 has 16 divisors (see below), whose sum is σ = 160253533440. Its totient is φ = 131746443840.

The previous prime is 145642172651. The next prime is 145642172699. The reversal of 145642172671 is 176271246541.

It is not a de Polignac number, because 145642172671 - 2⁵ = 145642172639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145642172651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42310 + ... + 541363.

It is an arithmetic number, because the mean of its divisors is an integer number (10015845840).

Almost surely, 2^145642172671 is an apocalyptic number.

145642172671 is a deficient number, since it is larger than the sum of its proper divisors (14611360769).

145642172671 is a wasteful number, since it uses less digits than its factorization.

145642172671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584286.

The product of its digits is 564480, while the sum is 46.

The spelling of 145642172671 in words is "one hundred forty-five billion, six hundred forty-two million, one hundred seventy-two thousand, six hundred seventy-one".