1265761088678 has 16 divisors (see below), whose sum is σ = 1903267825920. Its totient is φ = 631340337096.

The previous prime is 1265761088677. The next prime is 1265761088681. The reversal of 1265761088678 is 8768801675621.

It is a super-2 number, since 2×1265761088678² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265761088677) 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, 902201 + ... + 1829067.

It is an arithmetic number, because the mean of its divisors is an integer number (118954239120).

Almost surely, 2^{1265761088678} is an apocalyptic number.

1265761088678 is a deficient number, since it is larger than the sum of its proper divisors (637506737242).

1265761088678 is an equidigital number, since it uses as much as digits as its factorization.

1265761088678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928531.

The product of its (nonzero) digits is 54190080, while the sum is 65.

The spelling of 1265761088678 in words is "one trillion, two hundred sixty-five billion, seven hundred sixty-one million, eighty-eight thousand, six hundred seventy-eight".