248784656642 has 8 divisors (see below), whose sum is σ = 373185543036. Its totient is φ = 124389475632.

The previous prime is 248784656629. The next prime is 248784656647. The reversal of 248784656642 is 246656487842.

It can be written as a sum of positive squares in 2 ways, for example, as 222452779201 + 26331877441 = 471649^2 + 162271^2 .

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

It is not an unprimeable number, because it can be changed into a prime (248784656647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315613 + ... + 1492784.

Almost surely, 2^248784656642 is an apocalyptic number.

248784656642 is a deficient number, since it is larger than the sum of its proper divisors (124400886394).

248784656642 is a wasteful number, since it uses less digits than its factorization.

248784656642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852692.

The product of its digits is 123863040, while the sum is 62.

The spelling of 248784656642 in words is "two hundred forty-eight billion, seven hundred eighty-four million, six hundred fifty-six thousand, six hundred forty-two".