145515432021434 has 16 divisors (see below), whose sum is σ = 219401103720960. Its totient is φ = 72382327111920.

The previous prime is 145515432021371. The next prime is 145515432021437. The reversal of 145515432021434 is 434120234515541.

It is not an unprimeable number, because it can be changed into a prime (145515432021437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148594034 + ... + 149570109.

It is an arithmetic number, because the mean of its divisors is an integer number (13712568982560).

Almost surely, 2^{145515432021434} is an apocalyptic number.

145515432021434 is a deficient number, since it is larger than the sum of its proper divisors (73885671699526).

145515432021434 is a wasteful number, since it uses less digits than its factorization.

145515432021434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298165405.

The product of its (nonzero) digits is 1152000, while the sum is 44.

Adding to 145515432021434 its reverse (434120234515541), we get a palindrome (579635666536975).

The spelling of 145515432021434 in words is "one hundred forty-five trillion, five hundred fifteen billion, four hundred thirty-two million, twenty-one thousand, four hundred thirty-four".