145331442515 has 16 divisors (see below), whose sum is σ = 199321290432. Its totient is φ = 99651047424.

The previous prime is 145331442467. The next prime is 145331442523. The reversal of 145331442515 is 515244133541.

It is a cyclic number.

It is not a de Polignac number, because 145331442515 - 2²⁰ = 145330393939 is a prime.

It is a super-2 number, since 2×145331442515² (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, 735587 + ... + 912003.

It is an arithmetic number, because the mean of its divisors is an integer number (12457580652).

Almost surely, 2^145331442515 is an apocalyptic number.

145331442515 is a deficient number, since it is larger than the sum of its proper divisors (53989847917).

145331442515 is a wasteful number, since it uses less digits than its factorization.

145331442515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199966.

The product of its digits is 144000, while the sum is 38.

The spelling of 145331442515 in words is "one hundred forty-five billion, three hundred thirty-one million, four hundred forty-two thousand, five hundred fifteen".