1365400320051 has 8 divisors (see below), whose sum is σ = 1821761368000. Its totient is φ = 909653076072.

The previous prime is 1365400320043. The next prime is 1365400320083. The reversal of 1365400320051 is 1500230045631.

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

It is not a de Polignac number, because 1365400320051 - 2³ = 1365400320043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1365400320091) 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, 153445801 + ... + 153454698.

It is an arithmetic number, because the mean of its divisors is an integer number (227720171000).

Almost surely, 2^{1365400320051} is an apocalyptic number.

1365400320051 is a deficient number, since it is larger than the sum of its proper divisors (456361047949).

1365400320051 is a wasteful number, since it uses less digits than its factorization.

1365400320051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306901985.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 1365400320051 its reverse (1500230045631), we get a palindrome (2865630365682).

The spelling of 1365400320051 in words is "one trillion, three hundred sixty-five billion, four hundred million, three hundred twenty thousand, fifty-one".