215432151442 has 16 divisors (see below), whose sum is σ = 324239956992. Its totient is φ = 107352292320.

The previous prime is 215432151359. The next prime is 215432151443. The reversal of 215432151442 is 244151234512.

It is a super-2 number, since 2×215432151442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215432151398 and 215432151407.

It is not an unprimeable number, because it can be changed into a prime (215432151443) 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, 3756967 + ... + 3813877.

It is an arithmetic number, because the mean of its divisors is an integer number (20264997312).

Almost surely, 2^215432151442 is an apocalyptic number.

215432151442 is a deficient number, since it is larger than the sum of its proper divisors (108807805550).

215432151442 is a wasteful number, since it uses less digits than its factorization.

215432151442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63273.

The product of its digits is 38400, while the sum is 34.

Adding to 215432151442 its reverse (244151234512), we get a palindrome (459583385954).

The spelling of 215432151442 in words is "two hundred fifteen billion, four hundred thirty-two million, one hundred fifty-one thousand, four hundred forty-two".