7740451845 has 120 divisors (see below), whose sum is σ = 16163876352. Its totient is φ = 3422865600.

The previous prime is 7740451813. The next prime is 7740451861. The reversal of 7740451845 is 5481540477.

It is not a de Polignac number, because 7740451845 - 2⁵ = 7740451813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7740451845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3348240 + ... + 3350550.

Almost surely, 2^7740451845 is an apocalyptic number.

It is an amenable number.

7740451845 is an abundant number, since it is smaller than the sum of its proper divisors (8423424507).

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

7740451845 is a wasteful number, since it uses less digits than its factorization.

7740451845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The square root of 7740451845 is about 87979.8377186501. The cubic root of 7740451845 is about 1978.1327705871.

The spelling of 7740451845 in words is "seven billion, seven hundred forty million, four hundred fifty-one thousand, eight hundred forty-five".