155402152319 has 2 divisors, whose sum is σ = 155402152320. Its totient is φ = 155402152318.

The previous prime is 155402152313. The next prime is 155402152333. The reversal of 155402152319 is 913251204551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155402152319 - 2¹⁶ = 155402086783 is a prime.

It is a super-2 number, since 2×155402152319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155402152313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77701076159 + 77701076160.

It is an arithmetic number, because the mean of its divisors is an integer number (77701076160).

Almost surely, 2^155402152319 is an apocalyptic number.

155402152319 is a deficient number, since it is larger than the sum of its proper divisors (1).

155402152319 is an equidigital number, since it uses as much as digits as its factorization.

155402152319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 155402152319 in words is "one hundred fifty-five billion, four hundred two million, one hundred fifty-two thousand, three hundred nineteen".