74632741957 has 4 divisors (see below), whose sum is σ = 74722770220. Its totient is φ = 74542713696.

The previous prime is 74632741951. The next prime is 74632741961. The reversal of 74632741957 is 75914723647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17862055201 + 56770686756 = 133649^2 + 238266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74632741957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74632741898 and 74632741907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74632741951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45012888 + ... + 45014545.

It is an arithmetic number, because the mean of its divisors is an integer number (18680692555).

Almost surely, 2^74632741957 is an apocalyptic number.

It is an amenable number.

74632741957 is a deficient number, since it is larger than the sum of its proper divisors (90028263).

74632741957 is an equidigital number, since it uses as much as digits as its factorization.

74632741957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90028262.

The product of its digits is 8890560, while the sum is 55.

The spelling of 74632741957 in words is "seventy-four billion, six hundred thirty-two million, seven hundred forty-one thousand, nine hundred fifty-seven".