7148688780 has 48 divisors (see below), whose sum is σ = 20031863040. Its totient is φ = 1904837568.

The previous prime is 7148688721. The next prime is 7148688787. The reversal of 7148688780 is 878868417.

It is a super-2 number, since 2×7148688780² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7148688780.

It is not an unprimeable number, because it can be changed into a prime (7148688787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32841 + ... + 123999.

It is an arithmetic number, because the mean of its divisors is an integer number (417330480).

Almost surely, 2^7148688780 is an apocalyptic number.

It is an amenable number.

7148688780 is an abundant number, since it is smaller than the sum of its proper divisors (12883174260).

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

7148688780 is a wasteful number, since it uses less digits than its factorization.

7148688780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92478 (or 92476 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 57.

The square root of 7148688780 is about 84549.9188645382. The cubic root of 7148688780 is about 1926.3807515579.

The spelling of 7148688780 in words is "seven billion, one hundred forty-eight million, six hundred eighty-eight thousand, seven hundred eighty".