516718391448 has 128 divisors (see below), whose sum is σ = 1524391096320. Its totient is φ = 142831226880.

The previous prime is 516718391429. The next prime is 516718391461. The reversal of 516718391448 is 844193817615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21741940 + ... + 21765692.

It is an arithmetic number, because the mean of its divisors is an integer number (11909305440).

Almost surely, 2^516718391448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 516718391448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762195548160).

516718391448 is an abundant number, since it is smaller than the sum of its proper divisors (1007672704872).

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

516718391448 is a wasteful number, since it uses less digits than its factorization.

516718391448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27977 (or 27973 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The spelling of 516718391448 in words is "five hundred sixteen billion, seven hundred eighteen million, three hundred ninety-one thousand, four hundred forty-eight".