156487918861 has 16 divisors (see below), whose sum is σ = 161271792000. Its totient is φ = 151756976448.

The previous prime is 156487918837. The next prime is 156487918901. The reversal of 156487918861 is 168819784651.

It is a cyclic number.

It is not a de Polignac number, because 156487918861 - 2¹⁷ = 156487787789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156487918793 and 156487918802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156487918801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21709720 + ... + 21716926.

It is an arithmetic number, because the mean of its divisors is an integer number (10079487000).

Almost surely, 2^156487918861 is an apocalyptic number.

It is an amenable number.

156487918861 is a deficient number, since it is larger than the sum of its proper divisors (4783873139).

156487918861 is a wasteful number, since it uses less digits than its factorization.

156487918861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10788.

The product of its digits is 23224320, while the sum is 64.

The spelling of 156487918861 in words is "one hundred fifty-six billion, four hundred eighty-seven million, nine hundred eighteen thousand, eight hundred sixty-one".