145646164551 has 32 divisors (see below), whose sum is σ = 205498529280. Its totient is φ = 91570755584.

The previous prime is 145646164549. The next prime is 145646164553. The reversal of 145646164551 is 155461646541.

It is an interprime number because it is at equal distance from previous prime (145646164549) and next prime (145646164553).

It is a cyclic number.

It is not a de Polignac number, because 145646164551 - 2¹ = 145646164549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145646164551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145646164553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2134180 + ... + 2201366.

It is an arithmetic number, because the mean of its divisors is an integer number (6421829040).

Almost surely, 2^145646164551 is an apocalyptic number.

145646164551 is a deficient number, since it is larger than the sum of its proper divisors (59852364729).

145646164551 is a wasteful number, since it uses less digits than its factorization.

145646164551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67655.

The product of its digits is 1728000, while the sum is 48.

The spelling of 145646164551 in words is "one hundred forty-five billion, six hundred forty-six million, one hundred sixty-four thousand, five hundred fifty-one".