64428237541 has 2 divisors, whose sum is σ = 64428237542. Its totient is φ = 64428237540.

The previous prime is 64428237493. The next prime is 64428237547. The reversal of 64428237541 is 14573282446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57334386916 + 7093850625 = 239446^2 + 84225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64428237541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64428237491 and 64428237500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64428237547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32214118770 + 32214118771.

It is an arithmetic number, because the mean of its divisors is an integer number (32214118771).

Almost surely, 2^64428237541 is an apocalyptic number.

It is an amenable number.

64428237541 is a deficient number, since it is larger than the sum of its proper divisors (1).

64428237541 is an equidigital number, since it uses as much as digits as its factorization.

64428237541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 46.

The spelling of 64428237541 in words is "sixty-four billion, four hundred twenty-eight million, two hundred thirty-seven thousand, five hundred forty-one".