73628664109 has 16 divisors (see below), whose sum is σ = 98858067840. Its totient is φ = 52959677760.

The previous prime is 73628664103. The next prime is 73628664119. The reversal of 73628664109 is 90146682637.

It is not a de Polignac number, because 73628664109 - 2¹⁹ = 73628139821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73628664103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36776554 + ... + 36778555.

It is an arithmetic number, because the mean of its divisors is an integer number (6178629240).

Almost surely, 2^73628664109 is an apocalyptic number.

It is an amenable number.

73628664109 is a deficient number, since it is larger than the sum of its proper divisors (25229403731).

73628664109 is a wasteful number, since it uses less digits than its factorization.

73628664109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73555140.

The product of its (nonzero) digits is 2612736, while the sum is 52.

It can be divided in two parts, 73628 and 664109, that added together give a palindrome (737737).

The spelling of 73628664109 in words is "seventy-three billion, six hundred twenty-eight million, six hundred sixty-four thousand, one hundred nine".