145523979745 has 8 divisors (see below), whose sum is σ = 175800781800. Its totient is φ = 115637846400.

The previous prime is 145523979703. The next prime is 145523979767. The reversal of 145523979745 is 547979325541.

It can be written as a sum of positive squares in 4 ways, for example, as 32359692544 + 113164287201 = 179888^2 + 336399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145523979745 - 2²¹ = 145521882593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97666356 + ... + 97667845.

It is an arithmetic number, because the mean of its divisors is an integer number (21975097725).

Almost surely, 2^145523979745 is an apocalyptic number.

It is an amenable number.

145523979745 is a deficient number, since it is larger than the sum of its proper divisors (30276802055).

145523979745 is a wasteful number, since it uses less digits than its factorization.

145523979745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195334355.

The product of its digits is 47628000, while the sum is 61.

The spelling of 145523979745 in words is "one hundred forty-five billion, five hundred twenty-three million, nine hundred seventy-nine thousand, seven hundred forty-five".