211465157826 has 128 divisors (see below), whose sum is σ = 478323014400. Its totient is φ = 61876039680.

The previous prime is 211465157789. The next prime is 211465157833. The reversal of 211465157826 is 628751564112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40593510 + ... + 40598718.

It is an arithmetic number, because the mean of its divisors is an integer number (3736898550).

Almost surely, 2^211465157826 is an apocalyptic number.

211465157826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 211465157826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239161507200).

211465157826 is an abundant number, since it is smaller than the sum of its proper divisors (266857856574).

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

211465157826 is a wasteful number, since it uses less digits than its factorization.

211465157826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524.

The product of its digits is 806400, while the sum is 48.

The spelling of 211465157826 in words is "two hundred eleven billion, four hundred sixty-five million, one hundred fifty-seven thousand, eight hundred twenty-six".