42165554351 has 2 divisors, whose sum is σ = 42165554352. Its totient is φ = 42165554350.

The previous prime is 42165554329. The next prime is 42165554369. The reversal of 42165554351 is 15345556124.

42165554351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42165554351 - 2²² = 42161360047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42165554299 and 42165554308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42165554311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21082777175 + 21082777176.

It is an arithmetic number, because the mean of its divisors is an integer number (21082777176).

Almost surely, 2^42165554351 is an apocalyptic number.

42165554351 is a deficient number, since it is larger than the sum of its proper divisors (1).

42165554351 is an equidigital number, since it uses as much as digits as its factorization.

42165554351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360000, while the sum is 41.

The spelling of 42165554351 in words is "forty-two billion, one hundred sixty-five million, five hundred fifty-four thousand, three hundred fifty-one".