145172539401291 has 24 divisors (see below), whose sum is σ = 223524229760000. Its totient is φ = 90527313035952.

The previous prime is 145172539401289. The next prime is 145172539401311. The reversal of 145172539401291 is 192104935271541.

145172539401291 is a `hidden beast` number, since 1 + 4 + 5 + 1 + 7 + 2 + 539 + 4 + 0 + 12 + 91 = 666.

It is not a de Polignac number, because 145172539401291 - 2¹ = 145172539401289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145172539401271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5373165091 + ... + 5373192108.

Almost surely, 2^{145172539401291} is an apocalyptic number.

145172539401291 is a deficient number, since it is larger than the sum of its proper divisors (78351690358709).

145172539401291 is a wasteful number, since it uses less digits than its factorization.

145172539401291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10746357303 (or 10746357300 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 145172539401291 in words is "one hundred forty-five trillion, one hundred seventy-two billion, five hundred thirty-nine million, four hundred one thousand, two hundred ninety-one".