51211150399 has 2 divisors, whose sum is σ = 51211150400. Its totient is φ = 51211150398.

The previous prime is 51211150369. The next prime is 51211150423. The reversal of 51211150399 is 99305111215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51211150399 - 2⁷ = 51211150271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51211150349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25605575199 + 25605575200.

It is an arithmetic number, because the mean of its divisors is an integer number (25605575200).

Almost surely, 2^51211150399 is an apocalyptic number.

51211150399 is a deficient number, since it is larger than the sum of its proper divisors (1).

51211150399 is an equidigital number, since it uses as much as digits as its factorization.

51211150399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 37.

The spelling of 51211150399 in words is "fifty-one billion, two hundred eleven million, one hundred fifty thousand, three hundred ninety-nine".