145633495921 has 8 divisors (see below), whose sum is σ = 151988546304. Its totient is φ = 139280375520.

The previous prime is 145633495831. The next prime is 145633495933. The reversal of 145633495921 is 129594336541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145633495921 - 2¹³ = 145633487729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145633495951) 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, 327220 + ... + 631141.

It is an arithmetic number, because the mean of its divisors is an integer number (18998568288).

Almost surely, 2^145633495921 is an apocalyptic number.

It is an amenable number.

145633495921 is a deficient number, since it is larger than the sum of its proper divisors (6355050383).

145633495921 is an equidigital number, since it uses as much as digits as its factorization.

145633495921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964991.

The product of its digits is 3499200, while the sum is 52.

The spelling of 145633495921 in words is "one hundred forty-five billion, six hundred thirty-three million, four hundred ninety-five thousand, nine hundred twenty-one".