51237938007 has 6 divisors (see below), whose sum is σ = 74010354912. Its totient is φ = 34158625332.

The previous prime is 51237937999. The next prime is 51237938009. The reversal of 51237938007 is 70083973215.

It is a happy number.

It is not a de Polignac number, because 51237938007 - 2³ = 51237937999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51237938009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2846552103 + ... + 2846552120.

It is an arithmetic number, because the mean of its divisors is an integer number (12335059152).

Almost surely, 2^51237938007 is an apocalyptic number.

51237938007 is a deficient number, since it is larger than the sum of its proper divisors (22772416905).

51237938007 is a wasteful number, since it uses less digits than its factorization.

51237938007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693104229 (or 5693104226 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 51237938007 in words is "fifty-one billion, two hundred thirty-seven million, nine hundred thirty-eight thousand, seven".