145519672644 has 72 divisors (see below), whose sum is σ = 378376532352. Its totient is φ = 47136473280.

The previous prime is 145519672633. The next prime is 145519672741. The reversal of 145519672644 is 446276915541.

145519672644 is a `hidden beast` number, since 1 + 4 + 5 + 519 + 67 + 2 + 64 + 4 = 666.

145519672644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 216924 + ... + 581459.

It is an arithmetic number, because the mean of its divisors is an integer number (5255229616).

Almost surely, 2^145519672644 is an apocalyptic number.

It is an amenable number.

145519672644 is an abundant number, since it is smaller than the sum of its proper divisors (232856859708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145519672644 is a wasteful number, since it uses less digits than its factorization.

145519672644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798537 (or 798532 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 145519672644 in words is "one hundred forty-five billion, five hundred nineteen million, six hundred seventy-two thousand, six hundred forty-four".