1550511055500 has 96 divisors (see below), whose sum is σ = 4925550809088. Its totient is φ = 375881464000.

The previous prime is 1550511055469. The next prime is 1550511055507. The reversal of 1550511055500 is 55501150551.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1550511055507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46968684 + ... + 47001683.

It is an arithmetic number, because the mean of its divisors is an integer number (51307820928).

Almost surely, 2^{1550511055500} is an apocalyptic number.

1550511055500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550511055500 is an abundant number, since it is smaller than the sum of its proper divisors (3375039753588).

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

1550511055500 is a wasteful number, since it uses less digits than its factorization.

1550511055500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93970400 (or 93970388 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 33.

The spelling of 1550511055500 in words is "one trillion, five hundred fifty billion, five hundred eleven million, fifty-five thousand, five hundred".