7755865140 has 24 divisors (see below), whose sum is σ = 21716422560. Its totient is φ = 2068230688.

The previous prime is 7755865097. The next prime is 7755865141. The reversal of 7755865140 is 415685577.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 7755865140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7755865141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64632150 + ... + 64632269.

It is an arithmetic number, because the mean of its divisors is an integer number (904850940).

Almost surely, 2^7755865140 is an apocalyptic number.

It is an amenable number.

7755865140 is an abundant number, since it is smaller than the sum of its proper divisors (13960557420).

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

7755865140 is a wasteful number, since it uses less digits than its factorization.

7755865140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129264431 (or 129264429 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 48.

The square root of 7755865140 is about 88067.3897648840. The cubic root of 7755865140 is about 1979.4448959134. Note that the first 3 decimals are identical.

The spelling of 7755865140 in words is "seven billion, seven hundred fifty-five million, eight hundred sixty-five thousand, one hundred forty".