420156133266210 has 128 divisors (see below), whose sum is σ = 1120857710259456. Its totient is φ = 99929138749440.

The previous prime is 420156133266193. The next prime is 420156133266217. The reversal of 420156133266210 is 12662331651024.

It is not an unprimeable number, because it can be changed into a prime (420156133266217) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 349076794 + ... + 350278346.

It is an arithmetic number, because the mean of its divisors is an integer number (8756700861402).

Almost surely, 2^{420156133266210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420156133266210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560428855129728).

420156133266210 is an abundant number, since it is smaller than the sum of its proper divisors (700701576993246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420156133266210 is a wasteful number, since it uses less digits than its factorization.

420156133266210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221620.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 420156133266210 in words is "four hundred twenty trillion, one hundred fifty-six billion, one hundred thirty-three million, two hundred sixty-six thousand, two hundred ten".