1272261285151 has 4 divisors (see below), whose sum is σ = 1275045227152. Its totient is φ = 1269477343152.

The previous prime is 1272261285089. The next prime is 1272261285161. The reversal of 1272261285151 is 1515821622721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1272261285151 - 2¹³ = 1272261276959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1272261285098 and 1272261285107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272261285161) 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, 1391970315 + ... + 1391971228.

It is an arithmetic number, because the mean of its divisors is an integer number (318761306788).

Almost surely, 2^{1272261285151} is an apocalyptic number.

1272261285151 is a deficient number, since it is larger than the sum of its proper divisors (2783942001).

1272261285151 is an equidigital number, since it uses as much as digits as its factorization.

1272261285151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783942000.

The product of its digits is 134400, while the sum is 43.

The spelling of 1272261285151 in words is "one trillion, two hundred seventy-two billion, two hundred sixty-one million, two hundred eighty-five thousand, one hundred fifty-one".