55015004000 has 384 divisors, whose sum is σ = 154882990080. Its totient is φ = 19024128000.

The previous prime is 55015003993. The next prime is 55015004003. The reversal of 55015004000 is 40051055.

55015004000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55015004003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76515641 + ... + 76516359.

It is an arithmetic number, because the mean of its divisors is an integer number (403341120).

Almost surely, 2^55015004000 is an apocalyptic number.

55015004000 is a gapful number since it is divisible by the number (50) 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 55015004000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77441495040).

55015004000 is an abundant number, since it is smaller than the sum of its proper divisors (99867986080).

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

55015004000 is a wasteful number, since it uses less digits than its factorization.

55015004000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

Adding to 55015004000 its reverse (40051055), we get a palindrome (55055055055).

The spelling of 55015004000 in words is "fifty-five billion, fifteen million, four thousand".