51142400154 has 12 divisors (see below), whose sum is σ = 110808533706. Its totient is φ = 17047466712.

The previous prime is 51142400137. The next prime is 51142400161. The reversal of 51142400154 is 45100424115.

It can be written as a sum of positive squares in only one way, i.e., 50680365129 + 462035025 = 225123^2 + 21495^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1420622209 + ... + 1420622244.

Almost surely, 2^51142400154 is an apocalyptic number.

51142400154 is an abundant number, since it is smaller than the sum of its proper divisors (59666133552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51142400154 is a wasteful number, since it uses less digits than its factorization.

51142400154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841244461 (or 2841244458 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 51142400154 its reverse (45100424115), we get a palindrome (96242824269).

The spelling of 51142400154 in words is "fifty-one billion, one hundred forty-two million, four hundred thousand, one hundred fifty-four".