145965059730721 has 32 divisors (see below), whose sum is σ = 188319420576000. Its totient is φ = 109780950343680.

The previous prime is 145965059730713. The next prime is 145965059730731. The reversal of 145965059730721 is 127037950569541.

It is not a de Polignac number, because 145965059730721 - 2³ = 145965059730713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145965059730731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3911040 + ... + 17527873.

It is an arithmetic number, because the mean of its divisors is an integer number (5884981893000).

Almost surely, 2^{145965059730721} is an apocalyptic number.

145965059730721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145965059730721 is a deficient number, since it is larger than the sum of its proper divisors (42354360845279).

145965059730721 is a wasteful number, since it uses less digits than its factorization.

145965059730721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21442009.

The product of its (nonzero) digits is 71442000, while the sum is 64.

The spelling of 145965059730721 in words is "one hundred forty-five trillion, nine hundred sixty-five billion, fifty-nine million, seven hundred thirty thousand, seven hundred twenty-one".