3561416504557 has 2 divisors, whose sum is σ = 3561416504558. Its totient is φ = 3561416504556.

The previous prime is 3561416504519. The next prime is 3561416504647. The reversal of 3561416504557 is 7554056141653.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3187613881321 + 373802623236 = 1785389^2 + 611394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3561416504557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3561416502557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780708252278 + 1780708252279.

It is an arithmetic number, because the mean of its divisors is an integer number (1780708252279).

Almost surely, 2^{3561416504557} is an apocalyptic number.

It is an amenable number.

3561416504557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561416504557 is an equidigital number, since it uses as much as digits as its factorization.

3561416504557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560000, while the sum is 52.

The spelling of 3561416504557 in words is "three trillion, five hundred sixty-one billion, four hundred sixteen million, five hundred four thousand, five hundred fifty-seven".