1437674747681 has 4 divisors (see below), whose sum is σ = 1437767558292. Its totient is φ = 1437581937072.

The previous prime is 1437674747609. The next prime is 1437674747683. The reversal of 1437674747681 is 1867474767341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36389377600 + 1401285370081 = 190760^2 + 1183759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1437674747681 is a prime.

It is a super-2 number, since 2×1437674747681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1437674747683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46382066 + ... + 46413051.

It is an arithmetic number, because the mean of its divisors is an integer number (359441889573).

Almost surely, 2^{1437674747681} is an apocalyptic number.

It is an amenable number.

1437674747681 is a deficient number, since it is larger than the sum of its proper divisors (92810611).

1437674747681 is an equidigital number, since it uses as much as digits as its factorization.

1437674747681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92810610.

The product of its digits is 132765696, while the sum is 65.

The spelling of 1437674747681 in words is "one trillion, four hundred thirty-seven billion, six hundred seventy-four million, seven hundred forty-seven thousand, six hundred eighty-one".