1361250052501 has 4 divisors (see below), whose sum is σ = 1361253065004. Its totient is φ = 1361247040000.

The previous prime is 1361250052471. The next prime is 1361250052523. The reversal of 1361250052501 is 1052500521631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 296669766276 + 1064580286225 = 544674^2 + 1031785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361250052501 - 2⁷ = 1361250052373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361250002501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675850 + ... + 1783051.

It is an arithmetic number, because the mean of its divisors is an integer number (340313266251).

Almost surely, 2^{1361250052501} is an apocalyptic number.

It is an amenable number.

1361250052501 is a deficient number, since it is larger than the sum of its proper divisors (3012503).

1361250052501 is an equidigital number, since it uses as much as digits as its factorization.

1361250052501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012502.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 1361250052501 in words is "one trillion, three hundred sixty-one billion, two hundred fifty million, fifty-two thousand, five hundred one".