61398604948 has 12 divisors (see below), whose sum is σ = 113768003412. Its totient is φ = 28893461120.

The previous prime is 61398604921. The next prime is 61398604951. The reversal of 61398604948 is 84940689316.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 53558919184 + 7839685764 = 231428^2 + 88542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61398604892 and 61398604901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451460263 + ... + 451460398.

It is an arithmetic number, because the mean of its divisors is an integer number (9480666951).

Almost surely, 2^61398604948 is an apocalyptic number.

61398604948 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

61398604948 is a deficient number, since it is larger than the sum of its proper divisors (52369398464).

61398604948 is a wasteful number, since it uses less digits than its factorization.

61398604948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902920682 (or 902920680 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 61398604948 in words is "sixty-one billion, three hundred ninety-eight million, six hundred four thousand, nine hundred forty-eight".