6919966464 has 72 divisors (see below), whose sum is σ = 18442725840. Its totient is φ = 2303459328.

The previous prime is 6919966451. The next prime is 6919966483. The reversal of 6919966464 is 4646699196.

It is a junction number, because it is equal to n+sod(n) for n = 6919966398 and 6919966407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584734 + ... + 596450.

It is an arithmetic number, because the mean of its divisors is an integer number (256148970).

Almost surely, 2^6919966464 is an apocalyptic number.

6919966464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6919966464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9221362920).

6919966464 is an abundant number, since it is smaller than the sum of its proper divisors (11522759376).

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

6919966464 is a wasteful number, since it uses less digits than its factorization.

6919966464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12505 (or 12491 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 60.

The square root of 6919966464 is about 83186.3358010196. The cubic root of 6919966464 is about 1905.6128085451.

The spelling of 6919966464 in words is "six billion, nine hundred nineteen million, nine hundred sixty-six thousand, four hundred sixty-four".