1401561137613 has 32 divisors (see below), whose sum is σ = 2300376750336. Its totient is φ = 739163179008.

The previous prime is 1401561137591. The next prime is 1401561137699. The reversal of 1401561137613 is 3167311651041.

It is not a de Polignac number, because 1401561137613 - 2¹⁶ = 1401561072077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401561137813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1248931 + ... + 2088767.

It is an arithmetic number, because the mean of its divisors is an integer number (71886773448).

Almost surely, 2^{1401561137613} is an apocalyptic number.

1401561137613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1401561137613 is a deficient number, since it is larger than the sum of its proper divisors (898815612723).

1401561137613 is a wasteful number, since it uses less digits than its factorization.

1401561137613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845973.

The product of its (nonzero) digits is 45360, while the sum is 39.

Adding to 1401561137613 its reverse (3167311651041), we get a palindrome (4568872788654).

The spelling of 1401561137613 in words is "one trillion, four hundred one billion, five hundred sixty-one million, one hundred thirty-seven thousand, six hundred thirteen".