159264378978 has 16 divisors (see below), whose sum is σ = 318840747456. Its totient is φ = 53036128080.

The previous prime is 159264378971. The next prime is 159264378997. The reversal of 159264378978 is 879873462951.

It is a super-2 number, since 2×159264378978² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159264378971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12992926 + ... + 13005177.

It is an arithmetic number, because the mean of its divisors is an integer number (19927546716).

Almost surely, 2^159264378978 is an apocalyptic number.

159264378978 is an abundant number, since it is smaller than the sum of its proper divisors (159576368478).

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

159264378978 is a wasteful number, since it uses less digits than its factorization.

159264378978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25999129.

The product of its digits is 182891520, while the sum is 69.

The spelling of 159264378978 in words is "one hundred fifty-nine billion, two hundred sixty-four million, three hundred seventy-eight thousand, nine hundred seventy-eight".