158421705382 has 16 divisors (see below), whose sum is σ = 262550551392. Its totient is φ = 71310025600.

The previous prime is 158421705349. The next prime is 158421705419. The reversal of 158421705382 is 283507124851.

It is a happy number.

It is a super-2 number, since 2×158421705382² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101291869 + ... + 101293432.

It is an arithmetic number, because the mean of its divisors is an integer number (16409409462).

Almost surely, 2^158421705382 is an apocalyptic number.

158421705382 is a deficient number, since it is larger than the sum of its proper divisors (104128846010).

158421705382 is a wasteful number, since it uses less digits than its factorization.

158421705382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202585343.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 158421705382 in words is "one hundred fifty-eight billion, four hundred twenty-one million, seven hundred five thousand, three hundred eighty-two".