69981535973 has 2 divisors, whose sum is σ = 69981535974. Its totient is φ = 69981535972.

The previous prime is 69981535961. The next prime is 69981535999. The reversal of 69981535973 is 37953518996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37308081409 + 32673454564 = 193153^2 + 180758^2 .

It is a cyclic number.

It is not a de Polignac number, because 69981535973 - 2¹⁴ = 69981519589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69981535913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34990767986 + 34990767987.

It is an arithmetic number, because the mean of its divisors is an integer number (34990767987).

Almost surely, 2^69981535973 is an apocalyptic number.

It is an amenable number.

69981535973 is a deficient number, since it is larger than the sum of its proper divisors (1).

69981535973 is an equidigital number, since it uses as much as digits as its factorization.

69981535973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55112400, while the sum is 65.

The spelling of 69981535973 in words is "sixty-nine billion, nine hundred eighty-one million, five hundred thirty-five thousand, nine hundred seventy-three".