215839105401 has 8 divisors (see below), whose sum is σ = 287788381920. Its totient is φ = 143891282912.

The previous prime is 215839105393. The next prime is 215839105409. The reversal of 215839105401 is 104501938512.

It is an interprime number because it is at equal distance from previous prime (215839105393) and next prime (215839105409).

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 215839105401 - 2³ = 215839105393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215839105401.

It is not an unprimeable number, because it can be changed into a prime (215839105409) 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, 50086 + ... + 658928.

It is an arithmetic number, because the mean of its divisors is an integer number (35973547740).

Almost surely, 2^215839105401 is an apocalyptic number.

It is an amenable number.

215839105401 is a deficient number, since it is larger than the sum of its proper divisors (71949276519).

215839105401 is a wasteful number, since it uses less digits than its factorization.

215839105401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727015.

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 215839105401 in words is "two hundred fifteen billion, eight hundred thirty-nine million, one hundred five thousand, four hundred one".