99870581455 has 8 divisors (see below), whose sum is σ = 119867824800. Its totient is φ = 79881047136.

The previous prime is 99870581453. The next prime is 99870581527. The reversal of 99870581455 is 55418507899.

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 99870581455 - 2¹ = 99870581453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99870581393 and 99870581402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99870581453) 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, 1898715 + ... + 1950604.

It is an arithmetic number, because the mean of its divisors is an integer number (14983478100).

Almost surely, 2^99870581455 is an apocalyptic number.

99870581455 is a deficient number, since it is larger than the sum of its proper divisors (19997243345).

99870581455 is a wasteful number, since it uses less digits than its factorization.

99870581455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854513.

The product of its (nonzero) digits is 18144000, while the sum is 61.

The spelling of 99870581455 in words is "ninety-nine billion, eight hundred seventy million, five hundred eighty-one thousand, four hundred fifty-five".