74744220132461 has 6 divisors (see below), whose sum is σ = 82156870063086. Its totient is φ = 67949291029400.

The previous prime is 74744220132443. The next prime is 74744220132469. The reversal of 74744220132461 is 16423102244747.

It can be written as a sum of positive squares in only one way, i.e., 54614021416900 + 20130198715561 = 7390130^2 + 4486669^2 .

It is not a de Polignac number, because 74744220132461 - 2²² = 74744215938157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74744220132469) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308860413650 + ... + 308860413891.

It is an arithmetic number, because the mean of its divisors is an integer number (13692811677181).

Almost surely, 2^{74744220132461} is an apocalyptic number.

It is an amenable number.

74744220132461 is a deficient number, since it is larger than the sum of its proper divisors (7412649930625).

74744220132461 is a wasteful number, since it uses less digits than its factorization.

74744220132461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617720827563 (or 617720827552 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 47.

The spelling of 74744220132461 in words is "seventy-four trillion, seven hundred forty-four billion, two hundred twenty million, one hundred thirty-two thousand, four hundred sixty-one".