145331442497 has 8 divisors (see below), whose sum is σ = 148440717696. Its totient is φ = 142222880592.

The previous prime is 145331442467. The next prime is 145331442523. The reversal of 145331442497 is 794244133541.

145331442497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 145331442497 - 2¹⁰ = 145331441473 is a prime.

It is a super-2 number, since 2×145331442497² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145331442467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244118 + ... + 591824.

It is an arithmetic number, because the mean of its divisors is an integer number (18555089712).

Almost surely, 2^145331442497 is an apocalyptic number.

It is an amenable number.

145331442497 is a deficient number, since it is larger than the sum of its proper divisors (3109275199).

145331442497 is an equidigital number, since it uses as much as digits as its factorization.

145331442497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356647.

The product of its digits is 1451520, while the sum is 47.

The spelling of 145331442497 in words is "one hundred forty-five billion, three hundred thirty-one million, four hundred forty-two thousand, four hundred ninety-seven".