7748445745 has 8 divisors (see below), whose sum is σ = 9300395520. Its totient is φ = 6197249520.

The previous prime is 7748445737. The next prime is 7748445791. The reversal of 7748445745 is 5475448477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7748445745 - 2³ = 7748445737 is a prime.

It is a super-2 number, since 2×7748445745² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165511 + ... + 207100.

It is an arithmetic number, because the mean of its divisors is an integer number (1162549440).

Almost surely, 2^7748445745 is an apocalyptic number.

It is an amenable number.

7748445745 is a deficient number, since it is larger than the sum of its proper divisors (1551949775).

7748445745 is a wasteful number, since it uses less digits than its factorization.

7748445745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376775.

The product of its digits is 17561600, while the sum is 55.

The square root of 7748445745 is about 88025.2562904534. The cubic root of 7748445745 is about 1978.8135041069.

The spelling of 7748445745 in words is "seven billion, seven hundred forty-eight million, four hundred forty-five thousand, seven hundred forty-five".