51135539548534 has 48 divisors (see below), whose sum is σ = 89563578746400. Its totient is φ = 21832511613696.

The previous prime is 51135539548487. The next prime is 51135539548547. The reversal of 51135539548534 is 43584593553115.

It is a happy number.

It is a super-2 number, since 2×51135539548534² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34778392 + ... + 36218884.

It is an arithmetic number, because the mean of its divisors is an integer number (1865907890550).

Almost surely, 2^{51135539548534} is an apocalyptic number.

51135539548534 is a deficient number, since it is larger than the sum of its proper divisors (38428039197866).

51135539548534 is a wasteful number, since it uses less digits than its factorization.

51135539548534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441877 (or 1441870 counting only the distinct ones).

The product of its digits is 97200000, while the sum is 61.

The spelling of 51135539548534 in words is "fifty-one trillion, one hundred thirty-five billion, five hundred thirty-nine million, five hundred forty-eight thousand, five hundred thirty-four".