51140203541 has 16 divisors (see below), whose sum is σ = 59032716288. Its totient is φ = 43396560000.

The previous prime is 51140203529. The next prime is 51140203603. The reversal of 51140203541 is 14530204115.

It is a de Polignac number, because none of the positive numbers 2^k-51140203541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51140203541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51140206541) 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, 192041 + ... + 373041.

It is an arithmetic number, because the mean of its divisors is an integer number (3689544768).

Almost surely, 2^51140203541 is an apocalyptic number.

It is an amenable number.

51140203541 is a deficient number, since it is larger than the sum of its proper divisors (7892512747).

51140203541 is a wasteful number, since it uses less digits than its factorization.

51140203541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181412.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 51140203541 its reverse (14530204115), we get a palindrome (65670407656).

The spelling of 51140203541 in words is "fifty-one billion, one hundred forty million, two hundred three thousand, five hundred forty-one".