49166642401 has 4 divisors (see below), whose sum is σ = 50495470612. Its totient is φ = 47837814192.

The previous prime is 49166642389. The next prime is 49166642407. The reversal of 49166642401 is 10424666194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10424666194 = 2 ⋅5212333097.

It can be written as a sum of positive squares in 2 ways, for example, as 32833802401 + 16332840000 = 181201^2 + 127800^2 .

It is a cyclic number.

It is not a de Polignac number, because 49166642401 - 2²¹ = 49164545249 is a prime.

It is a super-2 number, since 2×49166642401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49166642407) 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, 664414050 + ... + 664414123.

It is an arithmetic number, because the mean of its divisors is an integer number (12623867653).

Almost surely, 2^49166642401 is an apocalyptic number.

It is an amenable number.

49166642401 is a deficient number, since it is larger than the sum of its proper divisors (1328828211).

49166642401 is a wasteful number, since it uses less digits than its factorization.

49166642401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328828210.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 49166642401 in words is "forty-nine billion, one hundred sixty-six million, six hundred forty-two thousand, four hundred one".