98987654545 has 16 divisors (see below), whose sum is σ = 134655272640. Its totient is φ = 69251281344.

The previous prime is 98987654537. The next prime is 98987654561. The reversal of 98987654545 is 54545678989.

98987654545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a cyclic number.

It is not a de Polignac number, because 98987654545 - 2³ = 98987654537 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40074739 + ... + 40077208.

It is an arithmetic number, because the mean of its divisors is an integer number (8415954540).

Almost surely, 2^98987654545 is an apocalyptic number.

98987654545 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

98987654545 is a deficient number, since it is larger than the sum of its proper divisors (35667618095).

98987654545 is a wasteful number, since it uses less digits than its factorization.

98987654545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80151984.

The product of its digits is 435456000, while the sum is 70.

The spelling of 98987654545 in words is "ninety-eight billion, nine hundred eighty-seven million, six hundred fifty-four thousand, five hundred forty-five".