3721456130537 has 4 divisors (see below), whose sum is σ = 3800636048256. Its totient is φ = 3642276212820.

The previous prime is 3721456130507. The next prime is 3721456130551. The reversal of 3721456130537 is 7350316541273.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3721456130537 - 2¹⁴ = 3721456114153 is a prime.

It is a super-2 number, since 2×3721456130537² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47), and also a Moran number because the ratio is a prime number: 79179917671 = 3721456130537 / (3 + 7 + 2 + 1 + 4 + 5 + 6 + 1 + 3 + 0 + 5 + 3 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3721456130491 and 3721456130500.

It is not an unprimeable number, because it can be changed into a prime (3721456130507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39589958789 + ... + 39589958882.

It is an arithmetic number, because the mean of its divisors is an integer number (950159012064).

Almost surely, 2^{3721456130537} is an apocalyptic number.

It is an amenable number.

3721456130537 is a deficient number, since it is larger than the sum of its proper divisors (79179917719).

3721456130537 is an equidigital number, since it uses as much as digits as its factorization.

3721456130537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79179917718.

The product of its (nonzero) digits is 1587600, while the sum is 47.

The spelling of 3721456130537 in words is "three trillion, seven hundred twenty-one billion, four hundred fifty-six million, one hundred thirty thousand, five hundred thirty-seven".