151779229391 has 2 divisors, whose sum is σ = 151779229392. Its totient is φ = 151779229390.

The previous prime is 151779229379. The next prime is 151779229417. The reversal of 151779229391 is 193922977151.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151779229391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151779229991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75889614695 + 75889614696.

It is an arithmetic number, because the mean of its divisors is an integer number (75889614696).

Almost surely, 2^151779229391 is an apocalyptic number.

151779229391 is a deficient number, since it is larger than the sum of its proper divisors (1).

151779229391 is an equidigital number, since it uses as much as digits as its factorization.

151779229391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2143260, while the sum is 56.

The spelling of 151779229391 in words is "one hundred fifty-one billion, seven hundred seventy-nine million, two hundred twenty-nine thousand, three hundred ninety-one".