74558694949 has 8 divisors (see below), whose sum is σ = 77148855000. Its totient is φ = 71969812992.

The previous prime is 74558694943. The next prime is 74558694961. The reversal of 74558694949 is 94949685547.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14537124900 + 60021570049 = 120570^2 + 244993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74558694949 is a prime.

It is a super-2 number, since 2×74558694949² (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 (74558694943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200064 + ... + 434905.

It is an arithmetic number, because the mean of its divisors is an integer number (9643606875).

Almost surely, 2^74558694949 is an apocalyptic number.

It is an amenable number.

74558694949 is a deficient number, since it is larger than the sum of its proper divisors (2590160051).

74558694949 is a wasteful number, since it uses less digits than its factorization.

74558694949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639047.

The product of its digits is 391910400, while the sum is 70.

The spelling of 74558694949 in words is "seventy-four billion, five hundred fifty-eight million, six hundred ninety-four thousand, nine hundred forty-nine".