55557915259392 has 480 divisors, whose sum is σ = 201069941200128. Its totient is φ = 14376166391808.

The previous prime is 55557915259349. The next prime is 55557915259409. The reversal of 55557915259392 is 29395251975555.

55557915259392 is a `hidden beast` number, since 5 + 5 + 5 + 5 + 7 + 9 + 1 + 525 + 9 + 3 + 92 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 55557915259392.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20974453 + ... + 23474315.

Almost surely, 2^{55557915259392} is an apocalyptic number.

55557915259392 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55557915259392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100534970600064).

55557915259392 is an abundant number, since it is smaller than the sum of its proper divisors (145512025940736).

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

55557915259392 is a wasteful number, since it uses less digits than its factorization.

55557915259392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499960 (or 2499941 counting only the distinct ones).

The product of its digits is 956812500, while the sum is 72.

The spelling of 55557915259392 in words is "fifty-five trillion, five hundred fifty-seven billion, nine hundred fifteen million, two hundred fifty-nine thousand, three hundred ninety-two".