53432942621 has 2 divisors, whose sum is σ = 53432942622. Its totient is φ = 53432942620.

The previous prime is 53432942617. The next prime is 53432942657. The reversal of 53432942621 is 12624923435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32951325625 + 20481616996 = 181525^2 + 143114^2 .

It is a cyclic number.

It is not a de Polignac number, because 53432942621 - 2² = 53432942617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53432942681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26716471310 + 26716471311.

It is an arithmetic number, because the mean of its divisors is an integer number (26716471311).

Almost surely, 2^53432942621 is an apocalyptic number.

It is an amenable number.

53432942621 is a deficient number, since it is larger than the sum of its proper divisors (1).

53432942621 is an equidigital number, since it uses as much as digits as its factorization.

53432942621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 41.

The spelling of 53432942621 in words is "fifty-three billion, four hundred thirty-two million, nine hundred forty-two thousand, six hundred twenty-one".