145105939408 has 20 divisors (see below), whose sum is σ = 281152870020. Its totient is φ = 72550360064.

The previous prime is 145105939367. The next prime is 145105939457. The reversal of 145105939408 is 804939501541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 95006965824 + 50098973584 = 308232^2 + 223828^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343266 + ... + 638782.

It is an arithmetic number, because the mean of its divisors is an integer number (14057643501).

Almost surely, 2^145105939408 is an apocalyptic number.

It is an amenable number.

145105939408 is a deficient number, since it is larger than the sum of its proper divisors (136046930612).

145105939408 is a wasteful number, since it uses less digits than its factorization.

145105939408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326214 (or 326208 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 145105939408 in words is "one hundred forty-five billion, one hundred five million, nine hundred thirty-nine thousand, four hundred eight".