155010401639 has 2 divisors, whose sum is σ = 155010401640. Its totient is φ = 155010401638.

The previous prime is 155010401549. The next prime is 155010401641. The reversal of 155010401639 is 936104010551.

It is a strong prime.

It is an emirp because it is prime and its reverse (936104010551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155010401639 is a prime.

Together with 155010401641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 155010401599 and 155010401608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155010401659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77505200819 + 77505200820.

It is an arithmetic number, because the mean of its divisors is an integer number (77505200820).

Almost surely, 2^155010401639 is an apocalyptic number.

155010401639 is a deficient number, since it is larger than the sum of its proper divisors (1).

155010401639 is an equidigital number, since it uses as much as digits as its factorization.

155010401639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 155010401639 in words is "one hundred fifty-five billion, ten million, four hundred one thousand, six hundred thirty-nine".