75766357642 has 4 divisors (see below), whose sum is σ = 113649536466. Its totient is φ = 37883178820.

The previous prime is 75766357633. The next prime is 75766357651. The reversal of 75766357642 is 24675366757.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24675366757 = 733 ⋅33663529.

It is an interprime number because it is at equal distance from previous prime (75766357633) and next prime (75766357651).

It can be written as a sum of positive squares in only one way, i.e., 74496789481 + 1269568161 = 272941^2 + 35631^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18941589409 + ... + 18941589412.

Almost surely, 2^75766357642 is an apocalyptic number.

75766357642 is a deficient number, since it is larger than the sum of its proper divisors (37883178824).

75766357642 is a wasteful number, since it uses less digits than its factorization.

75766357642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37883178823.

The product of its digits is 44452800, while the sum is 58.

The spelling of 75766357642 in words is "seventy-five billion, seven hundred sixty-six million, three hundred fifty-seven thousand, six hundred forty-two".