7778213632 has 36 divisors (see below), whose sum is σ = 17744053936. Its totient is φ = 3333519360.

The previous prime is 7778213621. The next prime is 7778213657. The reversal of 7778213632 is 2363128777.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2168469 + ... + 2172052.

Almost surely, 2^7778213632 is an apocalyptic number.

It is an amenable number.

7778213632 is an abundant number, since it is smaller than the sum of its proper divisors (9965840304).

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

7778213632 is an equidigital number, since it uses as much as digits as its factorization.

7778213632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4340544 (or 4340530 counting only the distinct ones).

The product of its digits is 592704, while the sum is 46.

The square root of 7778213632 is about 88194.1813953732. The cubic root of 7778213632 is about 1981.3443266604.

The spelling of 7778213632 in words is "seven billion, seven hundred seventy-eight million, two hundred thirteen thousand, six hundred thirty-two".