7748880001 has 4 divisors (see below), whose sum is σ = 7998843904. Its totient is φ = 7498916100.

The previous prime is 7748879987. The next prime is 7748880047. The reversal of 7748880001 is 1000888477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1000888477 = 21143 ⋅47339.

It is a cyclic number.

It is not a de Polignac number, because 7748880001 - 2¹¹ = 7748877953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7748880001.

It is not an unprimeable number, because it can be changed into a prime (7748880091) by changing a digit.

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, 124981905 + ... + 124981966.

It is an arithmetic number, because the mean of its divisors is an integer number (1999710976).

Almost surely, 2^7748880001 is an apocalyptic number.

It is an amenable number.

7748880001 is a deficient number, since it is larger than the sum of its proper divisors (249963903).

7748880001 is a wasteful number, since it uses less digits than its factorization.

7748880001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249963902.

The product of its (nonzero) digits is 100352, while the sum is 43.

The square root of 7748880001 is about 88027.7229115919. The cubic root of 7748880001 is about 1978.8504704703.

The spelling of 7748880001 in words is "seven billion, seven hundred forty-eight million, eight hundred eighty thousand, one".