211506601456 has 20 divisors (see below), whose sum is σ = 412308119272. Its totient is φ = 105104506176.

The previous prime is 211506601451. The next prime is 211506601457. The reversal of 211506601456 is 654106605112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211506601451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40546971 + ... + 40552186.

Almost surely, 2^211506601456 is an apocalyptic number.

It is an amenable number.

211506601456 is a deficient number, since it is larger than the sum of its proper divisors (200801517816).

211506601456 is a wasteful number, since it uses less digits than its factorization.

211506601456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81099328 (or 81099322 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 211506601456 in words is "two hundred eleven billion, five hundred six million, six hundred one thousand, four hundred fifty-six".