43020153040021 has 16 divisors (see below), whose sum is σ = 43921763136000. Its totient is φ = 42126794236800.

The previous prime is 43020153040019. The next prime is 43020153040031. The reversal of 43020153040021 is 12004035102034.

It is a cyclic number.

It is not a de Polignac number, because 43020153040021 - 2¹ = 43020153040019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43020153040001) 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, 170312065 + ... + 170564473.

It is an arithmetic number, because the mean of its divisors is an integer number (2745110196000).

Almost surely, 2^{43020153040021} is an apocalyptic number.

It is an amenable number.

43020153040021 is a deficient number, since it is larger than the sum of its proper divisors (901610095979).

43020153040021 is a wasteful number, since it uses less digits than its factorization.

43020153040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268740.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 43020153040021 its reverse (12004035102034), we get a palindrome (55024188142055).

The spelling of 43020153040021 in words is "forty-three trillion, twenty billion, one hundred fifty-three million, forty thousand, twenty-one".