420351551511 has 32 divisors (see below), whose sum is σ = 609329571840. Its totient is φ = 256887487584.

The previous prime is 420351551509. The next prime is 420351551579. The reversal of 420351551511 is 115155153024.

It is a happy number.

It is not a de Polignac number, because 420351551511 - 2¹ = 420351551509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420351551111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 539155 + ... + 1063668.

It is an arithmetic number, because the mean of its divisors is an integer number (19041549120).

Almost surely, 2^420351551511 is an apocalyptic number.

420351551511 is a deficient number, since it is larger than the sum of its proper divisors (188978020329).

420351551511 is a wasteful number, since it uses less digits than its factorization.

420351551511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602995.

The product of its (nonzero) digits is 15000, while the sum is 33.

The spelling of 420351551511 in words is "four hundred twenty billion, three hundred fifty-one million, five hundred fifty-one thousand, five hundred eleven".