1365090261621 has 8 divisors (see below), whose sum is σ = 1820337865920. Its totient is φ = 909951415872.

The previous prime is 1365090261571. The next prime is 1365090261637. The reversal of 1365090261621 is 1261620905631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1365090261621 - 2¹⁷ = 1365090130549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1365090268621) 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, 27160345 + ... + 27210558.

It is an arithmetic number, because the mean of its divisors is an integer number (227542233240).

Almost surely, 2^{1365090261621} is an apocalyptic number.

It is an amenable number.

1365090261621 is a deficient number, since it is larger than the sum of its proper divisors (455247604299).

1365090261621 is an equidigital number, since it uses as much as digits as its factorization.

1365090261621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54379275.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 1365090261621 in words is "one trillion, three hundred sixty-five billion, ninety million, two hundred sixty-one thousand, six hundred twenty-one".