1381101898765 has 16 divisors (see below), whose sum is σ = 1743629776560. Its totient is φ = 1048799854080.

The previous prime is 1381101898739. The next prime is 1381101898777. The reversal of 1381101898765 is 5678981011831.

It can be written as a sum of positive squares in 8 ways, for example, as 144215379049 + 1236886519716 = 379757^2 + 1112154^2 .

It is not a de Polignac number, because 1381101898765 - 2²⁵ = 1381068344333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91034070 + ... + 91049239.

It is an arithmetic number, because the mean of its divisors is an integer number (108976861035).

Almost surely, 2^{1381101898765} is an apocalyptic number.

It is an amenable number.

1381101898765 is a deficient number, since it is larger than the sum of its proper divisors (362527877795).

1381101898765 is a wasteful number, since it uses less digits than its factorization.

1381101898765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182083392.

The product of its (nonzero) digits is 2903040, while the sum is 58.

The spelling of 1381101898765 in words is "one trillion, three hundred eighty-one billion, one hundred one million, eight hundred ninety-eight thousand, seven hundred sixty-five".