1265319018496 has 133 divisors (see below), whose sum is σ = 2741519267341. Its totient is φ = 583993393152.

The previous prime is 1265319018463. The next prime is 1265319018503. The reversal of 1265319018496 is 6948109135621.

The square root of 1265319018496 is 1124864.

The cubic root of 1265319018496 is 10816.

It is a perfect power (a square, a cube, a 6-th power), and thus also a powerful number.

It can be written as a sum of positive squares in 3 ways, for example, as 1085597286400 + 179721732096 = 1041920^2 + 423936^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 6 ways as a sum of consecutive naturals, for example, 97332232186 + ... + 97332232198.

Almost surely, 2^{1265319018496} is an apocalyptic number.

1265319018496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1265319018496 is the 1124864-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265319018496

1265319018496 is an abundant number, since it is smaller than the sum of its proper divisors (1476200248845).

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

1265319018496 is an frugal number, since it uses more digits than its factorization.

1265319018496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 15 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 1265319018496 in words is "one trillion, two hundred sixty-five billion, three hundred nineteen million, eighteen thousand, four hundred ninety-six".