145215251035453 has 4 divisors (see below), whose sum is σ = 145215373093308. Its totient is φ = 145215128977600.

The previous prime is 145215251035451. The next prime is 145215251035487. The reversal of 145215251035453 is 354530152512541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12618252719524 + 132596998315929 = 3552218^2 + 11515077^2 .

It is a cyclic number.

It is not a de Polignac number, because 145215251035453 - 2¹ = 145215251035451 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 (145215251035451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59226598 + ... + 61629703.

It is an arithmetic number, because the mean of its divisors is an integer number (36303843273327).

Almost surely, 2^{145215251035453} is an apocalyptic number.

It is an amenable number.

145215251035453 is a deficient number, since it is larger than the sum of its proper divisors (122057855).

145215251035453 is a wasteful number, since it uses less digits than its factorization.

145215251035453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122057854.

The product of its (nonzero) digits is 1800000, while the sum is 46.

The spelling of 145215251035453 in words is "one hundred forty-five trillion, two hundred fifteen billion, two hundred fifty-one million, thirty-five thousand, four hundred fifty-three".