72869692541 has 2 divisors, whose sum is σ = 72869692542. Its totient is φ = 72869692540.

The previous prime is 72869692459. The next prime is 72869692547. The reversal of 72869692541 is 14529696827.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72821181316 + 48511225 = 269854^2 + 6965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72869692541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72869692547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36434846270 + 36434846271.

It is an arithmetic number, because the mean of its divisors is an integer number (36434846271).

Almost surely, 2^72869692541 is an apocalyptic number.

It is an amenable number.

72869692541 is a deficient number, since it is larger than the sum of its proper divisors (1).

72869692541 is an equidigital number, since it uses as much as digits as its factorization.

72869692541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 59.

The spelling of 72869692541 in words is "seventy-two billion, eight hundred sixty-nine million, six hundred ninety-two thousand, five hundred forty-one".