715378645448 has 16 divisors (see below), whose sum is σ = 1341396556380. Its totient is φ = 357672897088.

The previous prime is 715378645393. The next prime is 715378645493. The reversal of 715378645448 is 844546873517.

It can be written as a sum of positive squares in 2 ways, for example, as 685282641124 + 30096004324 = 827818^2 + 173482^2 .

It is a super-2 number, since 2×715378645448² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1867115 + ... + 2217402.

Almost surely, 2^715378645448 is an apocalyptic number.

It is an amenable number.

715378645448 is a deficient number, since it is larger than the sum of its proper divisors (626017910932).

715378645448 is a wasteful number, since it uses less digits than its factorization.

715378645448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106416 (or 4106412 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 62.

The spelling of 715378645448 in words is "seven hundred fifteen billion, three hundred seventy-eight million, six hundred forty-five thousand, four hundred forty-eight".