61648858690612 has 12 divisors (see below), whose sum is σ = 108286564058820. Its totient is φ = 30709840388096.

The previous prime is 61648858690609. The next prime is 61648858690619. The reversal of 61648858690612 is 21609685884616.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28563423714576 + 33085434976036 = 5344476^2 + 5751994^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61648858690619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28647238093 + ... + 28647240244.

It is an arithmetic number, because the mean of its divisors is an integer number (9023880338235).

Almost surely, 2^{61648858690612} is an apocalyptic number.

It is an amenable number.

61648858690612 is a deficient number, since it is larger than the sum of its proper divisors (46637705368208).

61648858690612 is a wasteful number, since it uses less digits than its factorization.

61648858690612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57294478610 (or 57294478608 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 70.

The spelling of 61648858690612 in words is "sixty-one trillion, six hundred forty-eight billion, eight hundred fifty-eight million, six hundred ninety thousand, six hundred twelve".