87420012279 has 8 divisors (see below), whose sum is σ = 116586971520. Its totient is φ = 58266530616.

The previous prime is 87420012269. The next prime is 87420012287. The reversal of 87420012279 is 97221002478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87420012279 - 2⁵ = 87420012247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87420012279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87420012269) 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, 3354249 + ... + 3380210.

It is an arithmetic number, because the mean of its divisors is an integer number (14573371440).

Almost surely, 2^87420012279 is an apocalyptic number.

87420012279 is a deficient number, since it is larger than the sum of its proper divisors (29166959241).

87420012279 is a wasteful number, since it uses less digits than its factorization.

87420012279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6738789.

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 87420012279 in words is "eighty-seven billion, four hundred twenty million, twelve thousand, two hundred seventy-nine".