154898091648 has 48 divisors (see below), whose sum is σ = 445735397250. Its totient is φ = 51632696832.

The previous prime is 154898091631. The next prime is 154898091721. The reversal of 154898091648 is 846190898451.

154898091648 is a `hidden beast` number, since 1 + 5 + 489 + 8 + 0 + 91 + 64 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 80787829824 + 74110261824 = 284232^2 + 272232^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67228923 + ... + 67231226.

Almost surely, 2^154898091648 is an apocalyptic number.

154898091648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

154898091648 is an abundant number, since it is smaller than the sum of its proper divisors (290837305602).

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

154898091648 is a wasteful number, since it uses less digits than its factorization.

154898091648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134460169 (or 134460154 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 63.

The spelling of 154898091648 in words is "one hundred fifty-four billion, eight hundred ninety-eight million, ninety-one thousand, six hundred forty-eight".