420155542515009 has 8 divisors (see below), whose sum is σ = 640237017165760. Its totient is φ = 240088881437136.

The previous prime is 420155542514987. The next prime is 420155542515043. The reversal of 420155542515009 is 900515245551024.

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

It is not a de Polignac number, because 420155542515009 - 2⁵ = 420155542514977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420155542515209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10003703393194 + ... + 10003703393235.

It is an arithmetic number, because the mean of its divisors is an integer number (80029627145720).

Almost surely, 2^{420155542515009} is an apocalyptic number.

It is an amenable number.

420155542515009 is a deficient number, since it is larger than the sum of its proper divisors (220081474650751).

420155542515009 is a wasteful number, since it uses less digits than its factorization.

420155542515009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20007406786439.

The product of its (nonzero) digits is 1800000, while the sum is 48.

The spelling of 420155542515009 in words is "four hundred twenty trillion, one hundred fifty-five billion, five hundred forty-two million, five hundred fifteen thousand, nine".