28193610667937 has 8 divisors (see below), whose sum is σ = 33122563582080. Its totient is φ = 23658973986960.

The previous prime is 28193610667897. The next prime is 28193610667949. The reversal of 28193610667937 is 73976601639182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28193610667937 - 2¹⁶ = 28193610602401 is a prime.

It is a super-2 number, since 2×28193610667937² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28193610667337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98579058137 + ... + 98579058422.

It is an arithmetic number, because the mean of its divisors is an integer number (4140320447760).

Almost surely, 2^{28193610667937} is an apocalyptic number.

It is an amenable number.

28193610667937 is a deficient number, since it is larger than the sum of its proper divisors (4928952914143).

28193610667937 is a wasteful number, since it uses less digits than its factorization.

28193610667937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197158116583.

The product of its (nonzero) digits is 123451776, while the sum is 68.

The spelling of 28193610667937 in words is "twenty-eight trillion, one hundred ninety-three billion, six hundred ten million, six hundred sixty-seven thousand, nine hundred thirty-seven".