145413213501 has 4 divisors (see below), whose sum is σ = 193884284672. Its totient is φ = 96942142332.

The previous prime is 145413213469. The next prime is 145413213503. The reversal of 145413213501 is 105312314541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 145413213501 - 2⁵ = 145413213469 is a prime.

It is a super-2 number, since 2×145413213501² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145413213503) 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, 24235535581 + ... + 24235535586.

It is an arithmetic number, because the mean of its divisors is an integer number (48471071168).

Almost surely, 2^145413213501 is an apocalyptic number.

It is an amenable number.

145413213501 is a deficient number, since it is larger than the sum of its proper divisors (48471071171).

145413213501 is an equidigital number, since it uses as much as digits as its factorization.

145413213501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48471071170.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 145413213501 in words is "one hundred forty-five billion, four hundred thirteen million, two hundred thirteen thousand, five hundred one".