73661387107 has 16 divisors (see below), whose sum is σ = 97239785472. Its totient is φ = 54022101120.

The previous prime is 73661387101. The next prime is 73661387117. The reversal of 73661387107 is 70178316637.

It is a cyclic number.

It is not a de Polignac number, because 73661387107 - 2⁷ = 73661386979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73661387101) 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 15 ways as a sum of consecutive naturals, for example, 28135203 + ... + 28137820.

It is an arithmetic number, because the mean of its divisors is an integer number (6077486592).

Almost surely, 2^73661387107 is an apocalyptic number.

73661387107 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

73661387107 is a deficient number, since it is larger than the sum of its proper divisors (23578398365).

73661387107 is a wasteful number, since it uses less digits than its factorization.

73661387107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56273058.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 73661387107 in words is "seventy-three billion, six hundred sixty-one million, three hundred eighty-seven thousand, one hundred seven".