3620520615641 has 4 divisors (see below), whose sum is σ = 3670116788532. Its totient is φ = 3570924442752.

The previous prime is 3620520615619. The next prime is 3620520615671. The reversal of 3620520615641 is 1465160250263.

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 2919214862041 + 701305753600 = 1708571^2 + 837440^2 .

It is a cyclic number.

It is not a de Polignac number, because 3620520615641 - 2⁶ = 3620520615577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3620520615671) 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, 24798086336 + ... + 24798086481.

It is an arithmetic number, because the mean of its divisors is an integer number (917529197133).

Almost surely, 2^{3620520615641} is an apocalyptic number.

It is an amenable number.

3620520615641 is a deficient number, since it is larger than the sum of its proper divisors (49596172891).

3620520615641 is an equidigital number, since it uses as much as digits as its factorization.

3620520615641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49596172890.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 3620520615641 in words is "three trillion, six hundred twenty billion, five hundred twenty million, six hundred fifteen thousand, six hundred forty-one".