154172466221640 has 32 divisors (see below), whose sum is σ = 462517398665280. Its totient is φ = 41112657659072.

The previous prime is 154172466221617. The next prime is 154172466221671. The reversal of 154172466221640 is 46122664271451.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642385275804 + ... + 642385276043.

It is an arithmetic number, because the mean of its divisors is an integer number (14453668708290).

Almost surely, 2^{154172466221640} is an apocalyptic number.

154172466221640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154172466221640 is an abundant number, since it is smaller than the sum of its proper divisors (308344932443640).

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

154172466221640 is a wasteful number, since it uses less digits than its factorization.

154172466221640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284770551861 (or 1284770551857 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 154172466221640 in words is "one hundred fifty-four trillion, one hundred seventy-two billion, four hundred sixty-six million, two hundred twenty-one thousand, six hundred forty".