51005009654 has 8 divisors (see below), whose sum is σ = 76525558680. Its totient is φ = 25496490096.

The previous prime is 51005009647. The next prime is 51005009663. The reversal of 51005009654 is 45690050015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51005009654² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2996759 + ... + 3013730.

It is an arithmetic number, because the mean of its divisors is an integer number (9565694835).

Almost surely, 2^51005009654 is an apocalyptic number.

51005009654 is a deficient number, since it is larger than the sum of its proper divisors (25520549026).

51005009654 is a wasteful number, since it uses less digits than its factorization.

51005009654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6014734.

The product of its (nonzero) digits is 27000, while the sum is 35.

Adding to 51005009654 its reverse (45690050015), we get a palindrome (96695059669).

The spelling of 51005009654 in words is "fifty-one billion, five million, nine thousand, six hundred fifty-four".