158861732890 has 32 divisors (see below), whose sum is σ = 333754504704. Its totient is φ = 53308008960.

The previous prime is 158861732807. The next prime is 158861732921. The reversal of 158861732890 is 98237168851.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24139831 + ... + 24146410.

It is an arithmetic number, because the mean of its divisors is an integer number (10429828272).

Almost surely, 2^158861732890 is an apocalyptic number.

158861732890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158861732890 is an abundant number, since it is smaller than the sum of its proper divisors (174892771814).

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

158861732890 is a wasteful number, since it uses less digits than its factorization.

158861732890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48286302.

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 158861732890 in words is "one hundred fifty-eight billion, eight hundred sixty-one million, seven hundred thirty-two thousand, eight hundred ninety".