61005010012 has 12 divisors (see below), whose sum is σ = 106763768440. Its totient is φ = 30501076176.

The previous prime is 61005009977. The next prime is 61005010063. The reversal of 61005010012 is 21001050016.

It is a happy number.

It is a super-2 number, since 2×61005010012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258087 + ... + 434302.

Almost surely, 2^61005010012 is an apocalyptic number.

It is an amenable number.

61005010012 is a deficient number, since it is larger than the sum of its proper divisors (45758758428).

61005010012 is a wasteful number, since it uses less digits than its factorization.

61005010012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714420 (or 714418 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 61005010012 its reverse (21001050016), we get a palindrome (82006060028).

The spelling of 61005010012 in words is "sixty-one billion, five million, ten thousand, twelve".