145331442505 has 16 divisors (see below), whose sum is σ = 176533628544. Its totient is φ = 114841774080.

The previous prime is 145331442467. The next prime is 145331442523. The reversal of 145331442505 is 505244133541.

It is not a de Polignac number, because 145331442505 - 2²¹ = 145329345353 is a prime.

It is a super-2 number, since 2×145331442505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2262025 + ... + 2325385.

It is an arithmetic number, because the mean of its divisors is an integer number (11033351784).

Almost surely, 2^145331442505 is an apocalyptic number.

It is an amenable number.

145331442505 is a deficient number, since it is larger than the sum of its proper divisors (31202186039).

145331442505 is an equidigital number, since it uses as much as digits as its factorization.

145331442505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68976.

The product of its (nonzero) digits is 144000, while the sum is 37.

The spelling of 145331442505 in words is "one hundred forty-five billion, three hundred thirty-one million, four hundred forty-two thousand, five hundred five".