7750640377 has 4 divisors (see below), whose sum is σ = 7752286836. Its totient is φ = 7748993920.

The previous prime is 7750640363. The next prime is 7750640399. The reversal of 7750640377 is 7730460577.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1701067536 + 6049572841 = 41244^2 + 77779^2 .

It is a cyclic number.

It is not a de Polignac number, because 7750640377 - 2¹⁵ = 7750607609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7750640477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816148 + ... + 825589.

It is an arithmetic number, because the mean of its divisors is an integer number (1938071709).

Almost surely, 2^7750640377 is an apocalyptic number.

It is an amenable number.

7750640377 is a deficient number, since it is larger than the sum of its proper divisors (1646459).

7750640377 is a wasteful number, since it uses less digits than its factorization.

7750640377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646458.

The product of its (nonzero) digits is 864360, while the sum is 46.

The square root of 7750640377 is about 88037.7213301208. The cubic root of 7750640377 is about 1979.0003096348. Note that the first 3 decimals are identical.

The spelling of 7750640377 in words is "seven billion, seven hundred fifty million, six hundred forty thousand, three hundred seventy-seven".