158268815040 has 448 divisors, whose sum is σ = 591189884928. Its totient is φ = 35126784000.

The previous prime is 158268814999. The next prime is 158268815053. The reversal of 158268815040 is 40518862851.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31964565 + ... + 31969515.

Almost surely, 2^158268815040 is an apocalyptic number.

158268815040 is a gapful number since it is divisible by the number (10) 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 158268815040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295594942464).

158268815040 is an abundant number, since it is smaller than the sum of its proper divisors (432921069888).

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

158268815040 is a wasteful number, since it uses less digits than its factorization.

158268815040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5116 (or 5106 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 48.

The spelling of 158268815040 in words is "one hundred fifty-eight billion, two hundred sixty-eight million, eight hundred fifteen thousand, forty".