69440294641 has 2 divisors, whose sum is σ = 69440294642. Its totient is φ = 69440294640.

The previous prime is 69440294611. The next prime is 69440294659. The reversal of 69440294641 is 14649204496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52404824241 + 17035470400 = 228921^2 + 130520^2 .

It is a cyclic number.

It is not a de Polignac number, because 69440294641 - 2¹³ = 69440286449 is a prime.

It is not a weakly prime, because it can be changed into another prime (69440294611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34720147320 + 34720147321.

It is an arithmetic number, because the mean of its divisors is an integer number (34720147321).

Almost surely, 2^69440294641 is an apocalyptic number.

It is an amenable number.

69440294641 is a deficient number, since it is larger than the sum of its proper divisors (1).

69440294641 is an equidigital number, since it uses as much as digits as its factorization.

69440294641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 69440294641 in words is "sixty-nine billion, four hundred forty million, two hundred ninety-four thousand, six hundred forty-one".