1401040631565 has 12 divisors (see below), whose sum is σ = 2428470428124. Its totient is φ = 747221670144.

The previous prime is 1401040631563. The next prime is 1401040631569. The reversal of 1401040631565 is 5651360401041.

1401040631565 is a `hidden beast` number, since 1 + 4 + 0 + 10 + 4 + 0 + 631 + 5 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 899802119241 + 501238512324 = 948579^2 + 707982^2 .

It is not a de Polignac number, because 1401040631565 - 2¹ = 1401040631563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401040631563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15567118084 + ... + 15567118173.

It is an arithmetic number, because the mean of its divisors is an integer number (202372535677).

Almost surely, 2^{1401040631565} is an apocalyptic number.

1401040631565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401040631565 is a deficient number, since it is larger than the sum of its proper divisors (1027429796559).

1401040631565 is a wasteful number, since it uses less digits than its factorization.

1401040631565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31134236268 (or 31134236265 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 1401040631565 in words is "one trillion, four hundred one billion, forty million, six hundred thirty-one thousand, five hundred sixty-five".