145715521534 has 32 divisors (see below), whose sum is σ = 249175574784. Its totient is φ = 63261665280.

The previous prime is 145715521531. The next prime is 145715521541. The reversal of 145715521534 is 435125517541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145715521531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134782 + ... + 556414.

It is an arithmetic number, because the mean of its divisors is an integer number (7786736712).

Almost surely, 2^145715521534 is an apocalyptic number.

145715521534 is a deficient number, since it is larger than the sum of its proper divisors (103460053250).

145715521534 is a wasteful number, since it uses less digits than its factorization.

145715521534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422352.

The product of its digits is 420000, while the sum is 43.

The spelling of 145715521534 in words is "one hundred forty-five billion, seven hundred fifteen million, five hundred twenty-one thousand, five hundred thirty-four".