1272385540415 has 32 divisors (see below), whose sum is σ = 1711913930496. Its totient is φ = 899868936960.

The previous prime is 1272385540397. The next prime is 1272385540423. The reversal of 1272385540415 is 5140455832721.

It is a happy number.

It is not a de Polignac number, because 1272385540415 - 2¹² = 1272385536319 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272385540415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 648182 + ... + 1721891.

It is an arithmetic number, because the mean of its divisors is an integer number (53497310328).

Almost surely, 2^{1272385540415} is an apocalyptic number.

1272385540415 is a deficient number, since it is larger than the sum of its proper divisors (439528390081).

1272385540415 is a wasteful number, since it uses less digits than its factorization.

1272385540415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370359.

The product of its (nonzero) digits is 1344000, while the sum is 47.

The spelling of 1272385540415 in words is "one trillion, two hundred seventy-two billion, three hundred eighty-five million, five hundred forty thousand, four hundred fifteen".