53820726961 has 4 divisors (see below), whose sum is σ = 56160758592. Its totient is φ = 51480695332.

The previous prime is 53820726931. The next prime is 53820726983. The reversal of 53820726961 is 16962702835.

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.

It is a cyclic number.

It is not a de Polignac number, because 53820726961 - 2⁵ = 53820726929 is a prime.

It is a super-2 number, since 2×53820726961² (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 (53820726931) 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, 1170015781 + ... + 1170015826.

It is an arithmetic number, because the mean of its divisors is an integer number (14040189648).

Almost surely, 2^53820726961 is an apocalyptic number.

It is an amenable number.

53820726961 is a deficient number, since it is larger than the sum of its proper divisors (2340031631).

53820726961 is a wasteful number, since it uses less digits than its factorization.

53820726961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340031630.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 53820726961 in words is "fifty-three billion, eight hundred twenty million, seven hundred twenty-six thousand, nine hundred sixty-one".