74935252809091 has 4 divisors (see below), whose sum is σ = 75091693838400. Its totient is φ = 74778811779784.

The previous prime is 74935252809073. The next prime is 74935252809107. The reversal of 74935252809091 is 19090825253947.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 74935252809091 - 2⁹ = 74935252808579 is a prime.

It is a super-2 number, since 2×74935252809091² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74935252806091) 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, 78220513936 + ... + 78220514893.

It is an arithmetic number, because the mean of its divisors is an integer number (18772923459600).

Almost surely, 2^{74935252809091} is an apocalyptic number.

74935252809091 is a deficient number, since it is larger than the sum of its proper divisors (156441029309).

74935252809091 is a wasteful number, since it uses less digits than its factorization.

74935252809091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156441029308.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 74935252809091 in words is "seventy-four trillion, nine hundred thirty-five billion, two hundred fifty-two million, eight hundred nine thousand, ninety-one".