145540201040421 has 16 divisors (see below), whose sum is σ = 211697976826368. Its totient is φ = 88204874553200.

The previous prime is 145540201040419. The next prime is 145540201040447. The reversal of 145540201040421 is 124040102045541.

It is a cyclic number.

It is not a de Polignac number, because 145540201040421 - 2¹ = 145540201040419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145540201040401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30435771 + ... + 34891496.

It is an arithmetic number, because the mean of its divisors is an integer number (13231123551648).

Almost surely, 2^{145540201040421} is an apocalyptic number.

145540201040421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145540201040421 is a deficient number, since it is larger than the sum of its proper divisors (66157775785947).

145540201040421 is a wasteful number, since it uses less digits than its factorization.

145540201040421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65394792.

The product of its (nonzero) digits is 25600, while the sum is 33.

Adding to 145540201040421 its reverse (124040102045541), we get a palindrome (269580303085962).

The spelling of 145540201040421 in words is "one hundred forty-five trillion, five hundred forty billion, two hundred one million, forty thousand, four hundred twenty-one".