51395370455 has 32 divisors (see below), whose sum is σ = 73133964288. Its totient is φ = 34180675200.

The previous prime is 51395370451. The next prime is 51395370469. The reversal of 51395370455 is 55407359315.

It is not a de Polignac number, because 51395370455 - 2² = 51395370451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51395370451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259391 + ... + 412400.

It is an arithmetic number, because the mean of its divisors is an integer number (2285436384).

Almost surely, 2^51395370455 is an apocalyptic number.

51395370455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51395370455 is a deficient number, since it is larger than the sum of its proper divisors (21738593833).

51395370455 is a wasteful number, since it uses less digits than its factorization.

51395370455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671927.

The product of its (nonzero) digits is 1417500, while the sum is 47.

The spelling of 51395370455 in words is "fifty-one billion, three hundred ninety-five million, three hundred seventy thousand, four hundred fifty-five".