1279151664155 has 4 divisors (see below), whose sum is σ = 1534981996992. Its totient is φ = 1023321331320.

The previous prime is 1279151664137. The next prime is 1279151664187. The reversal of 1279151664155 is 5514661519721.

It is a happy number.

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

It is not a de Polignac number, because 1279151664155 - 2²⁰ = 1279150615579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1279151664097 and 1279151664106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127915166411 + ... + 127915166420.

It is an arithmetic number, because the mean of its divisors is an integer number (383745499248).

Almost surely, 2^{1279151664155} is an apocalyptic number.

1279151664155 is a deficient number, since it is larger than the sum of its proper divisors (255830332837).

1279151664155 is an equidigital number, since it uses as much as digits as its factorization.

1279151664155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255830332836.

The product of its digits is 2268000, while the sum is 53.

The spelling of 1279151664155 in words is "one trillion, two hundred seventy-nine billion, one hundred fifty-one million, six hundred sixty-four thousand, one hundred fifty-five".