53775903969 has 20 divisors (see below), whose sum is σ = 80382401044. Its totient is φ = 35828067744.

The previous prime is 53775903947. The next prime is 53775903991. The reversal of 53775903969 is 96930957735.

53775903969 is a `hidden beast` number, since 5 + 3 + 7 + 7 + 590 + 39 + 6 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (53775903947) and next prime (53775903991).

It can be written as a sum of positive squares in 2 ways, for example, as 32141318400 + 21634585569 = 179280^2 + 147087^2 .

It is not a de Polignac number, because 53775903969 - 2¹² = 53775899873 is a prime.

It is a super-2 number, since 2×53775903969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53775903919) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 78502 + ... + 337215.

Almost surely, 2^53775903969 is an apocalyptic number.

It is an amenable number.

53775903969 is a deficient number, since it is larger than the sum of its proper divisors (26606497075).

53775903969 is a wasteful number, since it uses less digits than its factorization.

53775903969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417326 (or 417317 counting only the distinct ones).

The product of its (nonzero) digits is 48223350, while the sum is 63.

The spelling of 53775903969 in words is "fifty-three billion, seven hundred seventy-five million, nine hundred three thousand, nine hundred sixty-nine".