53699940049 has 4 divisors (see below), whose sum is σ = 61371360064. Its totient is φ = 46028520036.

The previous prime is 53699940037. The next prime is 53699940067. The reversal of 53699940049 is 94004999635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94004999635 = 5 ⋅18800999927.

It is a cyclic number.

It is not a de Polignac number, because 53699940049 - 2¹⁵ = 53699907281 is a prime.

It is a super-2 number, since 2×53699940049² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53699939975 and 53699940002.

It is not an unprimeable number, because it can be changed into a prime (53699940079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835709997 + ... + 3835710010.

It is an arithmetic number, because the mean of its divisors is an integer number (15342840016).

Almost surely, 2^53699940049 is an apocalyptic number.

It is an amenable number.

53699940049 is a deficient number, since it is larger than the sum of its proper divisors (7671420015).

53699940049 is an equidigital number, since it uses as much as digits as its factorization.

53699940049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7671420014.

The product of its (nonzero) digits is 9447840, while the sum is 58.

The spelling of 53699940049 in words is "fifty-three billion, six hundred ninety-nine million, nine hundred forty thousand, forty-nine".