215340404145553 has 8 divisors (see below), whose sum is σ = 217562537461472. Its totient is φ = 213118314281856.

The previous prime is 215340404145539. The next prime is 215340404145569. The reversal of 215340404145553 is 355541404043512.

It is a happy number.

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 215340404145553 - 2¹³ = 215340404137361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215340404145533) 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, 852975 + ... + 20770372.

It is an arithmetic number, because the mean of its divisors is an integer number (27195317182684).

Almost surely, 2^{215340404145553} is an apocalyptic number.

It is an amenable number.

215340404145553 is a deficient number, since it is larger than the sum of its proper divisors (2222133315919).

215340404145553 is a wasteful number, since it uses less digits than its factorization.

215340404145553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21726111.

The product of its (nonzero) digits is 2880000, while the sum is 46.

The spelling of 215340404145553 in words is "two hundred fifteen trillion, three hundred forty billion, four hundred four million, one hundred forty-five thousand, five hundred fifty-three".