20155431466504 has 16 divisors (see below), whose sum is σ = 37797072088320. Its totient is φ = 10076212242960.

The previous prime is 20155431466481. The next prime is 20155431466549. The reversal of 20155431466504 is 40566413455102.

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 in 3 ways as a sum of consecutive naturals, for example, 187879312 + ... + 187986559.

It is an arithmetic number, because the mean of its divisors is an integer number (2362317005520).

Almost surely, 2^{20155431466504} is an apocalyptic number.

It is an amenable number.

20155431466504 is a deficient number, since it is larger than the sum of its proper divisors (17641640621816).

20155431466504 is a wasteful number, since it uses less digits than its factorization.

20155431466504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375872580 (or 375872576 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 20155431466504 in words is "twenty trillion, one hundred fifty-five billion, four hundred thirty-one million, four hundred sixty-six thousand, five hundred four".