61212413332 has 24 divisors (see below), whose sum is σ = 129626288064. Its totient is φ = 24690721152.

The previous prime is 61212413291. The next prime is 61212413347. The reversal of 61212413332 is 23331421216.

It is a happy number.

It is a super-2 number, since 2×61212413332² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 61212413332.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64298278 + ... + 64299229.

It is an arithmetic number, because the mean of its divisors is an integer number (5401095336).

Almost surely, 2^61212413332 is an apocalyptic number.

It is an amenable number.

61212413332 is an abundant number, since it is smaller than the sum of its proper divisors (68413874732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61212413332 is a wasteful number, since it uses less digits than its factorization.

61212413332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128597535 (or 128597533 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

Adding to 61212413332 its reverse (23331421216), we get a palindrome (84543834548).

The spelling of 61212413332 in words is "sixty-one billion, two hundred twelve million, four hundred thirteen thousand, three hundred thirty-two".