51545654515 has 16 divisors (see below), whose sum is σ = 65754969120. Its totient is φ = 38679379200.

The previous prime is 51545654513. The next prime is 51545654521.

51545654515 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51545654515 - 2¹ = 51545654513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51545654513) 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, 2676474 + ... + 2695663.

It is an arithmetic number, because the mean of its divisors is an integer number (4109685570).

Almost surely, 2^51545654515 is an apocalyptic number.

51545654515 is a deficient number, since it is larger than the sum of its proper divisors (14209314605).

51545654515 is a wasteful number, since it uses less digits than its factorization.

51545654515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372262.

The product of its digits is 1500000, while the sum is 46.

The spelling of 51545654515 in words is "fifty-one billion, five hundred forty-five million, six hundred fifty-four thousand, five hundred fifteen".