1279948243562 has 4 divisors (see below), whose sum is σ = 1919922365346. Its totient is φ = 639974121780.

The previous prime is 1279948243547. The next prime is 1279948243577. The reversal of 1279948243562 is 2653428499721.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1279948243547) and next prime (1279948243577).

It can be written as a sum of positive squares in only one way, i.e., 1134376235041 + 145572008521 = 1065071^2 + 381539^2 .

It is a super-3 number, since 3×1279948243562³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1279948243495 and 1279948243504.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319987060889 + ... + 319987060892.

Almost surely, 2^{1279948243562} is an apocalyptic number.

1279948243562 is a deficient number, since it is larger than the sum of its proper divisors (639974121784).

1279948243562 is an equidigital number, since it uses as much as digits as its factorization.

1279948243562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639974121783.

The product of its digits is 52254720, while the sum is 62.

The spelling of 1279948243562 in words is "one trillion, two hundred seventy-nine billion, nine hundred forty-eight million, two hundred forty-three thousand, five hundred sixty-two".