420335656723355 has 16 divisors (see below), whose sum is σ = 504761408223744. Its totient is φ = 336029449177440.

The previous prime is 420335656723261. The next prime is 420335656723397. The reversal of 420335656723355 is 553327656533024.

It is not a de Polignac number, because 420335656723355 - 2¹⁴ = 420335656706971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420335656723294 and 420335656723303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1671408332 + ... + 1671659798.

It is an arithmetic number, because the mean of its divisors is an integer number (31547588013984).

Almost surely, 2^{420335656723355} is an apocalyptic number.

420335656723355 is a deficient number, since it is larger than the sum of its proper divisors (84425751500389).

420335656723355 is a wasteful number, since it uses less digits than its factorization.

420335656723355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487826.

The product of its (nonzero) digits is 204120000, while the sum is 59.

The spelling of 420335656723355 in words is "four hundred twenty trillion, three hundred thirty-five billion, six hundred fifty-six million, seven hundred twenty-three thousand, three hundred fifty-five".