7497481745 has 16 divisors (see below), whose sum is σ = 9691233552. Its totient is φ = 5535356160.

The previous prime is 7497481727. The next prime is 7497481753. The reversal of 7497481745 is 5471847947.

It is a Cunningham number, because it is equal to 86588²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 3992723344 + 3504758401 = 63188^2 + 59201^2 .

It is not a de Polignac number, because 7497481745 - 2¹⁰ = 7497480721 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359915 + ... + 380175.

It is an arithmetic number, because the mean of its divisors is an integer number (605702097).

Almost surely, 2^7497481745 is an apocalyptic number.

It is an amenable number.

7497481745 is a deficient number, since it is larger than the sum of its proper divisors (2193751807).

7497481745 is a wasteful number, since it uses less digits than its factorization.

7497481745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25972.

The product of its digits is 7902720, while the sum is 56.

The square root of 7497481745 is about 86588.0000057745. Note that the first 5 decimals coincide. The cubic root of 7497481745 is about 1957.2147152818.

The spelling of 7497481745 in words is "seven billion, four hundred ninety-seven million, four hundred eighty-one thousand, seven hundred forty-five".