351405646166545 has 8 divisors (see below), whose sum is σ = 421695153640296. Its totient is φ = 281118931439616.

The previous prime is 351405646166539. The next prime is 351405646166647. The reversal of 351405646166545 is 545661646504153.

It can be written as a sum of positive squares in 4 ways, for example, as 135534091731921 + 215871554434624 = 11641911^2 + 14692568^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 351405646166545 - 2¹⁹ = 351405645642257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697909872 + ... + 698413201.

It is an arithmetic number, because the mean of its divisors is an integer number (52711894205037).

Almost surely, 2^{351405646166545} is an apocalyptic number.

It is an amenable number.

351405646166545 is a deficient number, since it is larger than the sum of its proper divisors (70289507473751).

351405646166545 is a wasteful number, since it uses less digits than its factorization.

351405646166545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396373411.

The product of its (nonzero) digits is 155520000, while the sum is 61.

The spelling of 351405646166545 in words is "three hundred fifty-one trillion, four hundred five billion, six hundred forty-six million, one hundred sixty-six thousand, five hundred forty-five".