61330778373652 has 6 divisors (see below), whose sum is σ = 107328862153898. Its totient is φ = 30665389186824.

The previous prime is 61330778373637. The next prime is 61330778373679. The reversal of 61330778373652 is 25637387703316.

61330778373652 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 46355999058576 + 14974779315076 = 6808524^2 + 3869726^2 .

It is a super-2 number, since 2×61330778373652² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7666347296703 + ... + 7666347296710.

Almost surely, 2^{61330778373652} is an apocalyptic number.

It is an amenable number.

61330778373652 is a deficient number, since it is larger than the sum of its proper divisors (45998083780246).

61330778373652 is a wasteful number, since it uses less digits than its factorization.

61330778373652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15332694593417 (or 15332694593415 counting only the distinct ones).

The product of its (nonzero) digits is 80015040, while the sum is 61.

The spelling of 61330778373652 in words is "sixty-one trillion, three hundred thirty billion, seven hundred seventy-eight million, three hundred seventy-three thousand, six hundred fifty-two".