51363114155540 has 72 divisors (see below), whose sum is σ = 124799632853280. Its totient is φ = 17694469932480.

The previous prime is 51363114155491. The next prime is 51363114155579. The reversal of 51363114155540 is 4555141136315.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 51363114155491 and 51363114155500.

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, 558491582 + ... + 558583541.

Almost surely, 2^{51363114155540} is an apocalyptic number.

It is an amenable number.

51363114155540 is an abundant number, since it is smaller than the sum of its proper divisors (73436518697740).

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

51363114155540 is a wasteful number, since it uses less digits than its factorization.

51363114155540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117075173 (or 1117075160 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 51363114155540 in words is "fifty-one trillion, three hundred sixty-three billion, one hundred fourteen million, one hundred fifty-five thousand, five hundred forty".