1272852026145 has 320 divisors, whose sum is σ = 2743502192640. Its totient is φ = 552585825792.

The previous prime is 1272852026123. The next prime is 1272852026161. The reversal of 1272852026145 is 5416202582721.

1272852026145 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 8 + 5 + 20 + 2 + 614 + 5 = 666.

It is not a de Polignac number, because 1272852026145 - 2⁵ = 1272852026113 is a prime.

It is a super-2 number, since 2×1272852026145² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1272852026145.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 593956944 + ... + 593959086.

It is an arithmetic number, because the mean of its divisors is an integer number (8573444352).

Almost surely, 2^{1272852026145} is an apocalyptic number.

1272852026145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1272852026145 is an abundant number, since it is smaller than the sum of its proper divisors (1470650166495).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272852026145 is a wasteful number, since it uses less digits than its factorization.

1272852026145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346 (or 2337 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 1272852026145 in words is "one trillion, two hundred seventy-two billion, eight hundred fifty-two million, twenty-six thousand, one hundred forty-five".