51209541370 has 32 divisors (see below), whose sum is σ = 101379817728. Its totient is φ = 18505835328.

The previous prime is 51209541367. The next prime is 51209541373. The reversal of 51209541370 is 7314590215.

It is an interprime number because it is at equal distance from previous prime (51209541367) and next prime (51209541373).

It is not an unprimeable number, because it can be changed into a prime (51209541373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4184524 + ... + 4196743.

It is an arithmetic number, because the mean of its divisors is an integer number (3168119304).

Almost surely, 2^51209541370 is an apocalyptic number.

51209541370 is a deficient number, since it is larger than the sum of its proper divisors (50170276358).

51209541370 is a wasteful number, since it uses less digits than its factorization.

51209541370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8381334.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 51209541370 in words is "fifty-one billion, two hundred nine million, five hundred forty-one thousand, three hundred seventy".