145679731551391 has 2 divisors, whose sum is σ = 145679731551392. Its totient is φ = 145679731551390.

The previous prime is 145679731551349. The next prime is 145679731551457. The reversal of 145679731551391 is 193155137976541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145679731551391 - 2¹⁵ = 145679731518623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145679731554391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72839865775695 + 72839865775696.

It is an arithmetic number, because the mean of its divisors is an integer number (72839865775696).

Almost surely, 2^{145679731551391} is an apocalyptic number.

145679731551391 is a deficient number, since it is larger than the sum of its proper divisors (1).

145679731551391 is an equidigital number, since it uses as much as digits as its factorization.

145679731551391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107163000, while the sum is 67.

The spelling of 145679731551391 in words is "one hundred forty-five trillion, six hundred seventy-nine billion, seven hundred thirty-one million, five hundred fifty-one thousand, three hundred ninety-one".