1248684157666 has 8 divisors (see below), whose sum is σ = 2043301348944. Its totient is φ = 567583708020.

The previous prime is 1248684157663. The next prime is 1248684157697. The reversal of 1248684157666 is 6667514868421.

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

It is a junction number, because it is equal to n+sod(n) for n = 1248684157598 and 1248684157607.

It is not an unprimeable number, because it can be changed into a prime (1248684157661) 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, 28379185380 + ... + 28379185423.

It is an arithmetic number, because the mean of its divisors is an integer number (255412668618).

Almost surely, 2^{1248684157666} is an apocalyptic number.

1248684157666 is a deficient number, since it is larger than the sum of its proper divisors (794617191278).

1248684157666 is a wasteful number, since it uses less digits than its factorization.

1248684157666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56758370816.

The product of its digits is 92897280, while the sum is 64.

The spelling of 1248684157666 in words is "one trillion, two hundred forty-eight billion, six hundred eighty-four million, one hundred fifty-seven thousand, six hundred sixty-six".