28155170761 has 8 divisors (see below), whose sum is σ = 28836601344. Its totient is φ = 27479303280.

The previous prime is 28155170723. The next prime is 28155170773. The reversal of 28155170761 is 16707155182.

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

It is a cyclic number.

It is not a de Polignac number, because 28155170761 - 2⁷ = 28155170633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28155170261) 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, 1380531 + ... + 1400776.

It is an arithmetic number, because the mean of its divisors is an integer number (3604575168).

Almost surely, 2^28155170761 is an apocalyptic number.

It is an amenable number.

28155170761 is a deficient number, since it is larger than the sum of its proper divisors (681430583).

28155170761 is a wasteful number, since it uses less digits than its factorization.

28155170761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781551.

The product of its (nonzero) digits is 117600, while the sum is 43.

It can be divided in two parts, 28155 and 170761, that added together give a square (198916 = 446²).

The spelling of 28155170761 in words is "twenty-eight billion, one hundred fifty-five million, one hundred seventy thousand, seven hundred sixty-one".