1550404947456 has 240 divisors, whose sum is σ = 4588665681600. Its totient is φ = 503651696640.

The previous prime is 1550404947437. The next prime is 1550404947479. The reversal of 1550404947456 is 6547494040551.

1550404947456 is a `hidden beast` number, since 1 + 5 + 504 + 0 + 4 + 94 + 7 + 45 + 6 = 666.

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, 198181561 + ... + 198189383.

It is an arithmetic number, because the mean of its divisors is an integer number (19119440340).

Almost surely, 2^{1550404947456} is an apocalyptic number.

1550404947456 is a gapful number since it is divisible by the number (16) 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 1550404947456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2294332840800).

1550404947456 is an abundant number, since it is smaller than the sum of its proper divisors (3038260734144).

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

1550404947456 is a wasteful number, since it uses less digits than its factorization.

1550404947456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8937 (or 8918 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 1550404947456 in words is "one trillion, five hundred fifty billion, four hundred four million, nine hundred forty-seven thousand, four hundred fifty-six".