1259997270016 has 39 divisors (see below), whose sum is σ = 2519830593651. Its totient is φ = 629962715136.

The previous prime is 1259997269989. The next prime is 1259997270017. The reversal of 1259997270016 is 6100727999521.

The square root of 1259997270016 is 1122496.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1259997270017) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 71830975 + ... + 71848513.

Almost surely, 2^{1259997270016} is an apocalyptic number.

1259997270016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1259997270016 is the 1122496-th square number.

It is an amenable number.

1259997270016 is a deficient number, since it is larger than the sum of its proper divisors (1259833323635).

1259997270016 is an frugal number, since it uses more digits than its factorization.

1259997270016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35102 (or 17541 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 58.

The spelling of 1259997270016 in words is "one trillion, two hundred fifty-nine billion, nine hundred ninety-seven million, two hundred seventy thousand, sixteen".