51153250969 has 2 divisors, whose sum is σ = 51153250970. Its totient is φ = 51153250968.

The previous prime is 51153250963. The next prime is 51153251041. The reversal of 51153250969 is 96905235115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31183321744 + 19969929225 = 176588^2 + 141315^2 .

It is a cyclic number.

It is not a de Polignac number, because 51153250969 - 2³ = 51153250961 is a prime.

It is a super-2 number, since 2×51153250969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51153250961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25576625484 + 25576625485.

It is an arithmetic number, because the mean of its divisors is an integer number (25576625485).

Almost surely, 2^51153250969 is an apocalyptic number.

It is an amenable number.

51153250969 is a deficient number, since it is larger than the sum of its proper divisors (1).

51153250969 is an equidigital number, since it uses as much as digits as its factorization.

51153250969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 364500, while the sum is 46.

The spelling of 51153250969 in words is "fifty-one billion, one hundred fifty-three million, two hundred fifty thousand, nine hundred sixty-nine".