215420524132401 has 96 divisors (see below), whose sum is σ = 371987123908608. Its totient is φ = 117456736763520.

The previous prime is 215420524132399. The next prime is 215420524132403. The reversal of 215420524132401 is 104231425024512.

215420524132401 is a `hidden beast` number, since 2 + 1 + 5 + 4 + 2 + 0 + 5 + 241 + 3 + 2 + 401 = 666.

It is an interprime number because it is at equal distance from previous prime (215420524132399) and next prime (215420524132403).

It is not a de Polignac number, because 215420524132401 - 2¹ = 215420524132399 is a prime.

It is a super-2 number, since 2×215420524132401² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215420524132403) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 972833386 + ... + 973054796.

It is an arithmetic number, because the mean of its divisors is an integer number (3874865874048).

Almost surely, 2^{215420524132401} is an apocalyptic number.

215420524132401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

215420524132401 is a deficient number, since it is larger than the sum of its proper divisors (156566599776207).

215420524132401 is a wasteful number, since it uses less digits than its factorization.

215420524132401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223091 (or 223088 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 215420524132401 its reverse (104231425024512), we get a palindrome (319651949156913).

The spelling of 215420524132401 in words is "two hundred fifteen trillion, four hundred twenty billion, five hundred twenty-four million, one hundred thirty-two thousand, four hundred one".