51201404551451 has 36 divisors (see below), whose sum is σ = 65528925567840. Its totient is φ = 39859871436000.

The previous prime is 51201404551441. The next prime is 51201404551543. The reversal of 51201404551451 is 15415540410215.

It is not a de Polignac number, because 51201404551451 - 2²⁶ = 51201337442587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51201404551441) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2298926 + ... + 10377276.

It is an arithmetic number, because the mean of its divisors is an integer number (1820247932440).

Almost surely, 2^{51201404551451} is an apocalyptic number.

51201404551451 is a deficient number, since it is larger than the sum of its proper divisors (14327521016389).

51201404551451 is a wasteful number, since it uses less digits than its factorization.

51201404551451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079456 (or 8079438 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 38.

Adding to 51201404551451 its reverse (15415540410215), we get a palindrome (66616944961666).

The spelling of 51201404551451 in words is "fifty-one trillion, two hundred one billion, four hundred four million, five hundred fifty-one thousand, four hundred fifty-one".