53977201945 has 16 divisors (see below), whose sum is σ = 65127862800. Its totient is φ = 42945583104.

The previous prime is 53977201939. The next prime is 53977202009. The reversal of 53977201945 is 54910277935.

It can be written as a sum of positive squares in 8 ways, for example, as 22197722121 + 31779479824 = 148989^2 + 178268^2 .

It is a cyclic number.

It is not a de Polignac number, because 53977201945 - 2⁵ = 53977201913 is a prime.

It is a super-2 number, since 2×53977201945² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53977201892 and 53977201901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646981 + ... + 725629.

It is an arithmetic number, because the mean of its divisors is an integer number (4070491425).

Almost surely, 2^53977201945 is an apocalyptic number.

It is an amenable number.

53977201945 is a deficient number, since it is larger than the sum of its proper divisors (11150660855).

53977201945 is a wasteful number, since it uses less digits than its factorization.

53977201945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79404.

The product of its (nonzero) digits is 2381400, while the sum is 52.

The spelling of 53977201945 in words is "fifty-three billion, nine hundred seventy-seven million, two hundred one thousand, nine hundred forty-five".