61302136378 has 32 divisors (see below), whose sum is σ = 109943059968. Its totient is φ = 25086192000.

The previous prime is 61302136333. The next prime is 61302136381. The reversal of 61302136378 is 87363120316.

It is a self number, because there is not a number n which added to its sum of digits gives 61302136378.

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 15 ways as a sum of consecutive naturals, for example, 1109173 + ... + 1163128.

It is an arithmetic number, because the mean of its divisors is an integer number (3435720624).

Almost surely, 2^61302136378 is an apocalyptic number.

61302136378 is a deficient number, since it is larger than the sum of its proper divisors (48640923590).

61302136378 is a wasteful number, since it uses less digits than its factorization.

61302136378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272398.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 61302136378 in words is "sixty-one billion, three hundred two million, one hundred thirty-six thousand, three hundred seventy-eight".