61712052052 has 24 divisors (see below), whose sum is σ = 123558458240. Its totient is φ = 26419232160.

The previous prime is 61712052047. The next prime is 61712052091. The reversal of 61712052052 is 25025021716.

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, 1173399 + ... + 1224862.

Almost surely, 2^61712052052 is an apocalyptic number.

It is an amenable number.

61712052052 is an abundant number, since it is smaller than the sum of its proper divisors (61846406188).

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

61712052052 is a wasteful number, since it uses less digits than its factorization.

61712052052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399191 (or 2399189 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

Adding to 61712052052 its reverse (25025021716), we get a palindrome (86737073768).

The spelling of 61712052052 in words is "sixty-one billion, seven hundred twelve million, fifty-two thousand, fifty-two".