1401401388765 has 16 divisors (see below), whose sum is σ = 2562562539648. Its totient is φ = 640640634816.

The previous prime is 1401401388763. The next prime is 1401401388767. The reversal of 1401401388765 is 5678831041041.

It is an interprime number because it is at equal distance from previous prime (1401401388763) and next prime (1401401388767).

It is not a de Polignac number, because 1401401388765 - 2¹ = 1401401388763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401401388763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6673339842 + ... + 6673340051.

It is an arithmetic number, because the mean of its divisors is an integer number (160160158728).

Almost surely, 2^{1401401388765} is an apocalyptic number.

1401401388765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401401388765 is a deficient number, since it is larger than the sum of its proper divisors (1161161150883).

1401401388765 is a wasteful number, since it uses less digits than its factorization.

1401401388765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13346679908.

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 1401401388765 in words is "one trillion, four hundred one billion, four hundred one million, three hundred eighty-eight thousand, seven hundred sixty-five".