951778103923 has 12 divisors (see below), whose sum is σ = 1004675164128. Its totient is φ = 901534640400.

The previous prime is 951778103917. The next prime is 951778104029. The reversal of 951778103923 is 329301877159.

It is not a de Polignac number, because 951778103923 - 2⁹ = 951778103411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (951778103723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1986390 + ... + 2418532.

It is an arithmetic number, because the mean of its divisors is an integer number (83722930344).

Almost surely, 2^951778103923 is an apocalyptic number.

951778103923 is a deficient number, since it is larger than the sum of its proper divisors (52897060205).

951778103923 is a wasteful number, since it uses less digits than its factorization.

951778103923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438282 (or 438263 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 951778103923 in words is "nine hundred fifty-one billion, seven hundred seventy-eight million, one hundred three thousand, nine hundred twenty-three".