451778466916 has 24 divisors (see below), whose sum is σ = 903786077376. Its totient is φ = 193570240800.

The previous prime is 451778466907. The next prime is 451778466917. The reversal of 451778466916 is 619664877154.

It is not an unprimeable number, because it can be changed into a prime (451778466917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1933435 + ... + 2154466.

It is an arithmetic number, because the mean of its divisors is an integer number (37657753224).

Almost surely, 2^451778466916 is an apocalyptic number.

It is an amenable number.

451778466916 is an abundant number, since it is smaller than the sum of its proper divisors (452007610460).

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

451778466916 is a wasteful number, since it uses less digits than its factorization.

451778466916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091859 (or 4091857 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 64.

The spelling of 451778466916 in words is "four hundred fifty-one billion, seven hundred seventy-eight million, four hundred sixty-six thousand, nine hundred sixteen".