51440460308678 has 24 divisors (see below), whose sum is σ = 89870974617312. Its totient is φ = 22018250408784.

The previous prime is 51440460308663. The next prime is 51440460308683. The reversal of 51440460308678 is 87680306404415.

It is a super-2 number, since 2×51440460308678² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 329220926 + ... + 329377137.

It is an arithmetic number, because the mean of its divisors is an integer number (3744623942388).

Almost surely, 2^{51440460308678} is an apocalyptic number.

51440460308678 is a deficient number, since it is larger than the sum of its proper divisors (38430514308634).

51440460308678 is a wasteful number, since it uses less digits than its factorization.

51440460308678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658598876 (or 658598869 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 56.

The spelling of 51440460308678 in words is "fifty-one trillion, four hundred forty billion, four hundred sixty million, three hundred eight thousand, six hundred seventy-eight".