75207207773145 has 32 divisors (see below), whose sum is σ = 137532651770880. Its totient is φ = 34377712735680.

The previous prime is 75207207773143. The next prime is 75207207773209. The reversal of 75207207773145 is 54137770270257.

It is a happy number.

It is not a de Polignac number, because 75207207773145 - 2¹ = 75207207773143 is a prime.

It is a super-2 number, since 2×75207207773145² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75207207773143) 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, 27055191 + ... + 29705180.

It is an arithmetic number, because the mean of its divisors is an integer number (4297895367840).

Almost surely, 2^{75207207773145} is an apocalyptic number.

It is an amenable number.

75207207773145 is a deficient number, since it is larger than the sum of its proper divisors (62325443997735).

75207207773145 is a wasteful number, since it uses less digits than its factorization.

75207207773145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56773005.

The product of its (nonzero) digits is 20168400, while the sum is 57.

The spelling of 75207207773145 in words is "seventy-five trillion, two hundred seven billion, two hundred seven million, seven hundred seventy-three thousand, one hundred forty-five".