158438011776 has 192 divisors, whose sum is σ = 464540538000. Its totient is φ = 47808921600.

The previous prime is 158438011757. The next prime is 158438011777. The reversal of 158438011776 is 677110834851.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158438011777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11190750 + ... + 11204898.

Almost surely, 2^158438011776 is an apocalyptic number.

158438011776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158438011776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232270269000).

158438011776 is an abundant number, since it is smaller than the sum of its proper divisors (306102526224).

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

158438011776 is a wasteful number, since it uses less digits than its factorization.

158438011776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14429 (or 14406 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 158438011776 in words is "one hundred fifty-eight billion, four hundred thirty-eight million, eleven thousand, seven hundred seventy-six".