247912376464 has 15 divisors (see below), whose sum is σ = 480334088217. Its totient is φ = 123955192416.

The previous prime is 247912376431. The next prime is 247912376479. The reversal of 247912376464 is 464673219742.

The square root of 247912376464 is 497908.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 211434432400 + 36477944064 = 459820^2 + 190992^2 .

It is a super-2 number, since 2×247912376464² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1929394 + ... + 2053870.

Almost surely, 2^247912376464 is an apocalyptic number.

247912376464 is the 497908-th square number.

It is an amenable number.

247912376464 is a deficient number, since it is larger than the sum of its proper divisors (232421711753).

247912376464 is an frugal number, since it uses more digits than its factorization.

247912376464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248962 (or 124479 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 55.

The spelling of 247912376464 in words is "two hundred forty-seven billion, nine hundred twelve million, three hundred seventy-six thousand, four hundred sixty-four".