80987543154 has 48 divisors (see below), whose sum is σ = 201264643008. Its totient is φ = 23055752736.

The previous prime is 80987543141. The next prime is 80987543201. The reversal of 80987543154 is 45134578908.

80987543154 is a `hidden beast` number, since 8 + 0 + 9 + 87 + 543 + 15 + 4 = 666.

It is a super-2 number, since 2×80987543154² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80987543154.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1125312 + ... + 1195115.

It is an arithmetic number, because the mean of its divisors is an integer number (4193013396).

Almost surely, 2^80987543154 is an apocalyptic number.

80987543154 is an abundant number, since it is smaller than the sum of its proper divisors (120277099854).

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

80987543154 is a wasteful number, since it uses less digits than its factorization.

80987543154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320719 (or 2320716 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 80987543154 in words is "eighty billion, nine hundred eighty-seven million, five hundred forty-three thousand, one hundred fifty-four".