1272977400250 has 16 divisors (see below), whose sum is σ = 2383013693736. Its totient is φ = 509190960000.

The previous prime is 1272977400181. The next prime is 1272977400251. The reversal of 1272977400250 is 520047792721.

It can be written as a sum of positive squares in 4 ways, for example, as 344084308569 + 928893091681 = 586587^2 + 963791^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1272977400250.

It is not an unprimeable number, because it can be changed into a prime (1272977400251) 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, 2545954551 + ... + 2545955050.

Almost surely, 2^{1272977400250} is an apocalyptic number.

1272977400250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1272977400250 is a deficient number, since it is larger than the sum of its proper divisors (1110036293486).

1272977400250 is an equidigital number, since it uses as much as digits as its factorization.

1272977400250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091909618 (or 5091909608 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 1272977400250 in words is "one trillion, two hundred seventy-two billion, nine hundred seventy-seven million, four hundred thousand, two hundred fifty".