158778002032 has 20 divisors (see below), whose sum is σ = 331296408520. Its totient is φ = 73282154688.

The previous prime is 158778002003. The next prime is 158778002093. The reversal of 158778002032 is 230200877851.

It is a super-2 number, since 2×158778002032² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 158778002032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381677682 + ... + 381678097.

It is an arithmetic number, because the mean of its divisors is an integer number (16564820426).

Almost surely, 2^158778002032 is an apocalyptic number.

It is an amenable number.

158778002032 is an abundant number, since it is smaller than the sum of its proper divisors (172518406488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158778002032 is a wasteful number, since it uses less digits than its factorization.

158778002032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763355800 (or 763355794 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

Adding to 158778002032 its reverse (230200877851), we get a palindrome (388978879883).

The spelling of 158778002032 in words is "one hundred fifty-eight billion, seven hundred seventy-eight million, two thousand, thirty-two".