61367089972 has 36 divisors (see below), whose sum is σ = 111679547364. Its totient is φ = 29488018560.

The previous prime is 61367089969. The next prime is 61367089997. The reversal of 61367089972 is 27998076316.

It can be written as a sum of positive squares in 2 ways, for example, as 18172118416 + 43194971556 = 134804^2 + 207834^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 694518 + ... + 777874.

It is an arithmetic number, because the mean of its divisors is an integer number (3102209649).

Almost surely, 2^61367089972 is an apocalyptic number.

It is an amenable number.

61367089972 is a deficient number, since it is larger than the sum of its proper divisors (50312457392).

61367089972 is a wasteful number, since it uses less digits than its factorization.

61367089972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83536 (or 83467 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 61367089972 in words is "sixty-one billion, three hundred sixty-seven million, eighty-nine thousand, nine hundred seventy-two".