61214633203621 has 2 divisors, whose sum is σ = 61214633203622. Its totient is φ = 61214633203620.

The previous prime is 61214633203613. The next prime is 61214633203631. The reversal of 61214633203621 is 12630233641216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48176287155396 + 13038346048225 = 6940914^2 + 3610865^2 .

It is a cyclic number.

It is not a de Polignac number, because 61214633203621 - 2³ = 61214633203613 is a prime.

It is a super-2 number, since 2×61214633203621² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61214633203631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30607316601810 + 30607316601811.

It is an arithmetic number, because the mean of its divisors is an integer number (30607316601811).

Almost surely, 2^{61214633203621} is an apocalyptic number.

It is an amenable number.

61214633203621 is a deficient number, since it is larger than the sum of its proper divisors (1).

61214633203621 is an equidigital number, since it uses as much as digits as its factorization.

61214633203621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 40.

Adding to 61214633203621 its reverse (12630233641216), we get a palindrome (73844866844837).

The spelling of 61214633203621 in words is "sixty-one trillion, two hundred fourteen billion, six hundred thirty-three million, two hundred three thousand, six hundred twenty-one".