87905979268 has 24 divisors (see below), whose sum is σ = 156878769600. Its totient is φ = 43087625568.

The previous prime is 87905979241. The next prime is 87905979289. The reversal of 87905979268 is 86297950978.

It is a super-2 number, since 2×87905979268² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87905979197 and 87905979206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434055 + ... + 603502.

It is an arithmetic number, because the mean of its divisors is an integer number (6536615400).

Almost surely, 2^87905979268 is an apocalyptic number.

It is an amenable number.

87905979268 is a deficient number, since it is larger than the sum of its proper divisors (68972790332).

87905979268 is a wasteful number, since it uses less digits than its factorization.

87905979268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037979 (or 1037977 counting only the distinct ones).

The product of its (nonzero) digits is 137168640, while the sum is 70.

The spelling of 87905979268 in words is "eighty-seven billion, nine hundred five million, nine hundred seventy-nine thousand, two hundred sixty-eight".