17954320956 has 48 divisors (see below), whose sum is σ = 49217443968. Its totient is φ = 5022187200.

The previous prime is 17954320939. The next prime is 17954320957. The reversal of 17954320956 is 65902345971.

It is a junction number, because it is equal to n+sod(n) for n = 17954320899 and 17954320908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17954320957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5229730 + ... + 5233161.

It is an arithmetic number, because the mean of its divisors is an integer number (1025363416).

Almost surely, 2^17954320956 is an apocalyptic number.

It is an amenable number.

17954320956 is an abundant number, since it is smaller than the sum of its proper divisors (31263123012).

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

17954320956 is a wasteful number, since it uses less digits than its factorization.

17954320956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10462922 (or 10462920 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 51.

The spelling of 17954320956 in words is "seventeen billion, nine hundred fifty-four million, three hundred twenty thousand, nine hundred fifty-six".