159749134776 has 1152 divisors, whose sum is σ = 614000424960. Its totient is φ = 36926668800.

The previous prime is 159749134763. The next prime is 159749134777. The reversal of 159749134776 is 677431947951.

159749134776 is a `hidden beast` number, since 1 + 5 + 9 + 74 + 91 + 3 + 477 + 6 = 666.

It is a super-2 number, since 2×159749134776² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159749134777) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1492982515 + ... + 1492982621.

It is an arithmetic number, because the mean of its divisors is an integer number (532986480).

Almost surely, 2^159749134776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159749134776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307000212480).

159749134776 is an abundant number, since it is smaller than the sum of its proper divisors (454251290184).

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

159749134776 is a wasteful number, since it uses less digits than its factorization.

159749134776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 251 counting only the distinct ones).

The product of its digits is 40007520, while the sum is 63.

The spelling of 159749134776 in words is "one hundred fifty-nine billion, seven hundred forty-nine million, one hundred thirty-four thousand, seven hundred seventy-six".