145415342473 has 4 divisors (see below), whose sum is σ = 145494074880. Its totient is φ = 145336610068.

The previous prime is 145415342447. The next prime is 145415342491. The reversal of 145415342473 is 374243514541.

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, and also an emirpimes, since its reverse is a distinct semiprime: 374243514541 = 13 ⋅28787962657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145415342473 is a prime.

It is a super-3 number, since 3×145415342473³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145415349473) 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, 39363433 + ... + 39367126.

It is an arithmetic number, because the mean of its divisors is an integer number (36373518720).

Almost surely, 2^145415342473 is an apocalyptic number.

It is an amenable number.

145415342473 is a deficient number, since it is larger than the sum of its proper divisors (78732407).

145415342473 is an equidigital number, since it uses as much as digits as its factorization.

145415342473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78732406.

The product of its digits is 806400, while the sum is 43.

The spelling of 145415342473 in words is "one hundred forty-five billion, four hundred fifteen million, three hundred forty-two thousand, four hundred seventy-three".