1267638025153 has 8 divisors (see below), whose sum is σ = 1296136664928. Its totient is φ = 1239454287744.

The previous prime is 1267638025151. The next prime is 1267638025223. The reversal of 1267638025153 is 3515208367621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1267638025153 - 2¹ = 1267638025151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1267638025097 and 1267638025106.

It is not an unprimeable number, because it can be changed into a prime (1267638025151) 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, 78717451 + ... + 78733552.

It is an arithmetic number, because the mean of its divisors is an integer number (162017083116).

Almost surely, 2^{1267638025153} is an apocalyptic number.

It is an amenable number.

1267638025153 is a deficient number, since it is larger than the sum of its proper divisors (28498639775).

1267638025153 is an equidigital number, since it uses as much as digits as its factorization.

1267638025153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157451183.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 1267638025153 in words is "one trillion, two hundred sixty-seven billion, six hundred thirty-eight million, twenty-five thousand, one hundred fifty-three".