61354664452 has 6 divisors (see below), whose sum is σ = 107370662798. Its totient is φ = 30677332224.

The previous prime is 61354664443. The next prime is 61354664467. The reversal of 61354664452 is 25446645316.

It can be written as a sum of positive squares in only one way, i.e., 61278031936 + 76632516 = 247544^2 + 8754^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7669333053 + ... + 7669333060.

Almost surely, 2^61354664452 is an apocalyptic number.

It is an amenable number.

61354664452 is a deficient number, since it is larger than the sum of its proper divisors (46015998346).

61354664452 is a wasteful number, since it uses less digits than its factorization.

61354664452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15338666117 (or 15338666115 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 46.

The spelling of 61354664452 in words is "sixty-one billion, three hundred fifty-four million, six hundred sixty-four thousand, four hundred fifty-two".