87897420145 has 8 divisors (see below), whose sum is σ = 105486238656. Its totient is φ = 70311713136.

The previous prime is 87897420137. The next prime is 87897420239. The reversal of 87897420145 is 54102479878.

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

It is a cyclic number.

It is not a de Polignac number, because 87897420145 - 2³ = 87897420137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 715267 + ... + 829096.

It is an arithmetic number, because the mean of its divisors is an integer number (13185779832).

Almost surely, 2^87897420145 is an apocalyptic number.

It is an amenable number.

87897420145 is a deficient number, since it is larger than the sum of its proper divisors (17588818511).

87897420145 is a wasteful number, since it uses less digits than its factorization.

87897420145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555751.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 87897420145 in words is "eighty-seven billion, eight hundred ninety-seven million, four hundred twenty thousand, one hundred forty-five".