53021428961 has 2 divisors, whose sum is σ = 53021428962. Its totient is φ = 53021428960.

The previous prime is 53021428927. The next prime is 53021428969. The reversal of 53021428961 is 16982412035.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26746639936 + 26274789025 = 163544^2 + 162095^2 .

It is a cyclic number.

It is not a de Polignac number, because 53021428961 - 2¹⁰ = 53021427937 is a prime.

It is a super-2 number, since 2×53021428961² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53021428969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26510714480 + 26510714481.

It is an arithmetic number, because the mean of its divisors is an integer number (26510714481).

Almost surely, 2^53021428961 is an apocalyptic number.

It is an amenable number.

53021428961 is a deficient number, since it is larger than the sum of its proper divisors (1).

53021428961 is an equidigital number, since it uses as much as digits as its factorization.

53021428961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 53021428961 in words is "fifty-three billion, twenty-one million, four hundred twenty-eight thousand, nine hundred sixty-one".