3651146604557 has 4 divisors (see below), whose sum is σ = 3749826242556. Its totient is φ = 3552466966560.

The previous prime is 3651146604529. The next prime is 3651146604559. The reversal of 3651146604557 is 7554066411563.

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 3422274303721 + 228872300836 = 1849939^2 + 478406^2 .

It is a cyclic number.

It is not a de Polignac number, because 3651146604557 - 2¹⁸ = 3651146342413 is a prime.

It is a super-2 number, since 2×3651146604557² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3651146604499 and 3651146604508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651146604559) 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, 49339818944 + ... + 49339819017.

It is an arithmetic number, because the mean of its divisors is an integer number (937456560639).

Almost surely, 2^{3651146604557} is an apocalyptic number.

3651146604557 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3651146604557 is a deficient number, since it is larger than the sum of its proper divisors (98679637999).

3651146604557 is an equidigital number, since it uses as much as digits as its factorization.

3651146604557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98679637998.

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 3651146604557 in words is "three trillion, six hundred fifty-one billion, one hundred forty-six million, six hundred four thousand, five hundred fifty-seven".