99870581454 has 32 divisors (see below), whose sum is σ = 229595143680. Its totient is φ = 28369510752.

The previous prime is 99870581453. The next prime is 99870581527. The reversal of 99870581454 is 45418507899.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 6865194 + ... + 6879725.

It is an arithmetic number, because the mean of its divisors is an integer number (7174848240).

Almost surely, 2^99870581454 is an apocalyptic number.

99870581454 is an abundant number, since it is smaller than the sum of its proper divisors (129724562226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99870581454 is a wasteful number, since it uses less digits than its factorization.

99870581454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13745104.

The product of its (nonzero) digits is 14515200, while the sum is 60.

The spelling of 99870581454 in words is "ninety-nine billion, eight hundred seventy million, five hundred eighty-one thousand, four hundred fifty-four".