75087945431 has 4 divisors (see below), whose sum is σ = 75093337032. Its totient is φ = 75082553832.

The previous prime is 75087945409. The next prime is 75087945497. The reversal of 75087945431 is 13454978057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13454978057 = 197 ⋅68299381.

It is a cyclic number.

It is not a de Polignac number, because 75087945431 - 2⁶ = 75087945367 is a prime.

It is a super-2 number, since 2×75087945431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75087945131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2674856 + ... + 2702781.

It is an arithmetic number, because the mean of its divisors is an integer number (18773334258).

Almost surely, 2^75087945431 is an apocalyptic number.

75087945431 is a deficient number, since it is larger than the sum of its proper divisors (5391601).

75087945431 is a wasteful number, since it uses less digits than its factorization.

75087945431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391600.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 75087945431 in words is "seventy-five billion, eighty-seven million, nine hundred forty-five thousand, four hundred thirty-one".