61212353103 has 20 divisors (see below), whose sum is σ = 99753465768. Its totient is φ = 37098395280.

The previous prime is 61212353071. The next prime is 61212353119. The reversal of 61212353103 is 30135321216.

61212353103 is a `hidden beast` number, since 6 + 1 + 2 + 123 + 531 + 0 + 3 = 666.

It is not a de Polignac number, because 61212353103 - 2⁵ = 61212353071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61212353123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34349476 + ... + 34351257.

Almost surely, 2^61212353103 is an apocalyptic number.

61212353103 is a deficient number, since it is larger than the sum of its proper divisors (38541112665).

61212353103 is a wasteful number, since it uses less digits than its factorization.

61212353103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68700756 (or 68700747 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

Adding to 61212353103 its reverse (30135321216), we get a palindrome (91347674319).

The spelling of 61212353103 in words is "sixty-one billion, two hundred twelve million, three hundred fifty-three thousand, one hundred three".