7420544757 has 32 divisors (see below), whose sum is σ = 11237260800. Its totient is φ = 4837480704.

The previous prime is 7420544711. The next prime is 7420544819. The reversal of 7420544757 is 7574450247.

It is not a de Polignac number, because 7420544757 - 2¹⁶ = 7420479221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7420544057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2100969 + ... + 2104497.

It is an arithmetic number, because the mean of its divisors is an integer number (351164400).

Almost surely, 2^7420544757 is an apocalyptic number.

It is an amenable number.

7420544757 is a deficient number, since it is larger than the sum of its proper divisors (3816716043).

7420544757 is a wasteful number, since it uses less digits than its factorization.

7420544757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242 (or 5236 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 45.

The square root of 7420544757 is about 86142.5838769653. The cubic root of 7420544757 is about 1950.4968934906.

The spelling of 7420544757 in words is "seven billion, four hundred twenty million, five hundred forty-four thousand, seven hundred fifty-seven".