28911962545 has 8 divisors (see below), whose sum is σ = 34706389824. Its totient is φ = 23121546864.

The previous prime is 28911962537. The next prime is 28911962581. The reversal of 28911962545 is 54526911982.

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 not a de Polignac number, because 28911962545 - 2³ = 28911962537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28911962492 and 28911962501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987019 + ... + 1015888.

It is an arithmetic number, because the mean of its divisors is an integer number (4338298728).

Almost surely, 2^28911962545 is an apocalyptic number.

It is an amenable number.

28911962545 is a deficient number, since it is larger than the sum of its proper divisors (5794427279).

28911962545 is a wasteful number, since it uses less digits than its factorization.

28911962545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005799.

The product of its digits is 1555200, while the sum is 52.

The spelling of 28911962545 in words is "twenty-eight billion, nine hundred eleven million, nine hundred sixty-two thousand, five hundred forty-five".