145327701491 has 36 divisors (see below), whose sum is σ = 187392451248. Its totient is φ = 112141548288.

The previous prime is 145327701487. The next prime is 145327701511. The reversal of 145327701491 is 194107723541.

It is not a de Polignac number, because 145327701491 - 2² = 145327701487 is a prime.

It is a super-2 number, since 2×145327701491² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145327701691) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 102605 + ... + 548801.

It is an arithmetic number, because the mean of its divisors is an integer number (5205345868).

Almost surely, 2^145327701491 is an apocalyptic number.

145327701491 is a deficient number, since it is larger than the sum of its proper divisors (42064749757).

145327701491 is a wasteful number, since it uses less digits than its factorization.

145327701491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446268 (or 446244 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 145327701491 in words is "one hundred forty-five billion, three hundred twenty-seven million, seven hundred one thousand, four hundred ninety-one".