61238399067 has 48 divisors (see below), whose sum is σ = 91707752448. Its totient is φ = 39352521600.

The previous prime is 61238399021. The next prime is 61238399069. The reversal of 61238399067 is 76099383216.

It is not a de Polignac number, because 61238399067 - 2⁶ = 61238399003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61238399069) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 35540868 + ... + 35542590.

It is an arithmetic number, because the mean of its divisors is an integer number (1910578176).

Almost surely, 2^61238399067 is an apocalyptic number.

61238399067 is a deficient number, since it is larger than the sum of its proper divisors (30469353381).

61238399067 is a wasteful number, since it uses less digits than its factorization.

61238399067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000 (or 2997 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 61238399067 in words is "sixty-one billion, two hundred thirty-eight million, three hundred ninety-nine thousand, sixty-seven".