247478378583 has 8 divisors (see below), whose sum is σ = 329989789696. Its totient is φ = 164976276600.

The previous prime is 247478378527. The next prime is 247478378617. The reversal of 247478378583 is 385873874742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247478378583 - 2⁶ = 247478378519 is a prime.

It is a super-2 number, since 2×247478378583² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247478378503) 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, 2265013 + ... + 2371758.

It is an arithmetic number, because the mean of its divisors is an integer number (41248723712).

Almost surely, 2^247478378583 is an apocalyptic number.

247478378583 is a deficient number, since it is larger than the sum of its proper divisors (82511411113).

247478378583 is a wasteful number, since it uses less digits than its factorization.

247478378583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4654565.

The product of its digits is 252887040, while the sum is 66.

The spelling of 247478378583 in words is "two hundred forty-seven billion, four hundred seventy-eight million, three hundred seventy-eight thousand, five hundred eighty-three".