154961840986 has 8 divisors (see below), whose sum is σ = 232748207604. Its totient is φ = 77379105120.

The previous prime is 154961840959. The next prime is 154961840993. The reversal of 154961840986 is 689048169451.

It can be written as a sum of positive squares in 2 ways, for example, as 154503238761 + 458602225 = 393069^2 + 21415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50905785 + ... + 50908828.

Almost surely, 2^154961840986 is an apocalyptic number.

154961840986 is a deficient number, since it is larger than the sum of its proper divisors (77786366618).

154961840986 is a wasteful number, since it uses less digits than its factorization.

154961840986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101815376.

The product of its (nonzero) digits is 14929920, while the sum is 61.

The spelling of 154961840986 in words is "one hundred fifty-four billion, nine hundred sixty-one million, eight hundred forty thousand, nine hundred eighty-six".