158905385395770 has 256 divisors, whose sum is σ = 430341104793600. Its totient is φ = 37280406159360.

The previous prime is 158905385395693. The next prime is 158905385395807. The reversal of 158905385395770 is 77593583509851.

It is a junction number, because it is equal to n+sod(n) for n = 158905385395692 and 158905385395701.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4932942184 + ... + 4932974396.

It is an arithmetic number, because the mean of its divisors is an integer number (1681019940600).

Almost surely, 2^{158905385395770} is an apocalyptic number.

158905385395770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158905385395770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215170552396800).

158905385395770 is an abundant number, since it is smaller than the sum of its proper divisors (271435719397830).

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

158905385395770 is a wasteful number, since it uses less digits than its factorization.

158905385395770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37865.

The product of its (nonzero) digits is 1428840000, while the sum is 75.

The spelling of 158905385395770 in words is "one hundred fifty-eight trillion, nine hundred five billion, three hundred eighty-five million, three hundred ninety-five thousand, seven hundred seventy".