158775672990 has 256 divisors, whose sum is σ = 470511949824. Its totient is φ = 33805516800.

The previous prime is 158775672989. The next prime is 158775673009. The reversal of 158775672990 is 99276577851.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is a congruent number.

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, 5275224 + ... + 5305236.

It is an arithmetic number, because the mean of its divisors is an integer number (1837937304).

Almost surely, 2^158775672990 is an apocalyptic number.

158775672990 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 158775672990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235255974912).

158775672990 is an abundant number, since it is smaller than the sum of its proper divisors (311736276834).

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

158775672990 is a wasteful number, since it uses less digits than its factorization.

158775672990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30115.

The product of its (nonzero) digits is 66679200, while the sum is 66.

The spelling of 158775672990 in words is "one hundred fifty-eight billion, seven hundred seventy-five million, six hundred seventy-two thousand, nine hundred ninety".