154961394814 has 4 divisors (see below), whose sum is σ = 232442092224. Its totient is φ = 77480697406.

The previous prime is 154961394803. The next prime is 154961394877. The reversal of 154961394814 is 418493169451.

154961394814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 418493169451 = 7 ⋅59784738493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38740348702 + ... + 38740348705.

It is an arithmetic number, because the mean of its divisors is an integer number (58110523056).

Almost surely, 2^154961394814 is an apocalyptic number.

154961394814 is a deficient number, since it is larger than the sum of its proper divisors (77480697410).

154961394814 is an equidigital number, since it uses as much as digits as its factorization.

154961394814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77480697409.

The product of its digits is 3732480, while the sum is 55.

The spelling of 154961394814 in words is "one hundred fifty-four billion, nine hundred sixty-one million, three hundred ninety-four thousand, eight hundred fourteen".