7785550641 has 16 divisors (see below), whose sum is σ = 11353567680. Its totient is φ = 4706377920.

The previous prime is 7785550621. The next prime is 7785550651. The reversal of 7785550641 is 1460555877.

It is not a de Polignac number, because 7785550641 - 2²² = 7781356337 is a prime.

It is a super-2 number, since 2×7785550641² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7785550601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290410 + ... + 316083.

It is an arithmetic number, because the mean of its divisors is an integer number (709597980).

Almost surely, 2^7785550641 is an apocalyptic number.

It is an amenable number.

7785550641 is a deficient number, since it is larger than the sum of its proper divisors (3568017039).

7785550641 is a wasteful number, since it uses less digits than its factorization.

7785550641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606896.

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

The square root of 7785550641 is about 88235.7673565545. The cubic root of 7785550641 is about 1981.9671163046.

The spelling of 7785550641 in words is "seven billion, seven hundred eighty-five million, five hundred fifty thousand, six hundred forty-one".