7800755550 has 48 divisors (see below), whose sum is σ = 22109572992. Its totient is φ = 1783029600.

The previous prime is 7800755549. The next prime is 7800755593. The reversal of 7800755550 is 555570087.

It is a happy number.

It is a super-3 number, since 3×7800755550³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 3713596 + ... + 3715695.

It is an arithmetic number, because the mean of its divisors is an integer number (460616104).

Almost surely, 2^7800755550 is an apocalyptic number.

7800755550 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7800755550 is an abundant number, since it is smaller than the sum of its proper divisors (14308817442).

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

7800755550 is a wasteful number, since it uses less digits than its factorization.

7800755550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7429313 (or 7429308 counting only the distinct ones).

The product of its (nonzero) digits is 245000, while the sum is 42.

The square root of 7800755550 is about 88321.8860192648. The cubic root of 7800755550 is about 1983.2565148475.

The spelling of 7800755550 in words is "seven billion, eight hundred million, seven hundred fifty-five thousand, five hundred fifty".