28955701961 has 8 divisors (see below), whose sum is σ = 29097978624. Its totient is φ = 28813741120.

The previous prime is 28955701937. The next prime is 28955701963. The reversal of 28955701961 is 16910755982.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28955701961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28955701963) 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, 105920 + ... + 262926.

It is an arithmetic number, because the mean of its divisors is an integer number (3637247328).

Almost surely, 2^28955701961 is an apocalyptic number.

It is an amenable number.

28955701961 is a deficient number, since it is larger than the sum of its proper divisors (142276663).

28955701961 is a wasteful number, since it uses less digits than its factorization.

28955701961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157911.

The product of its (nonzero) digits is 1360800, while the sum is 53.

The spelling of 28955701961 in words is "twenty-eight billion, nine hundred fifty-five million, seven hundred one thousand, nine hundred sixty-one".