211774392140 has 48 divisors (see below), whose sum is σ = 456990660000. Its totient is φ = 82376128512.

The previous prime is 211774392131. The next prime is 211774392253. The reversal of 211774392140 is 41293477112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322111 + ... + 1473609.

It is an arithmetic number, because the mean of its divisors is an integer number (9520638750).

Almost surely, 2^211774392140 is an apocalyptic number.

211774392140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211774392140 is an abundant number, since it is smaller than the sum of its proper divisors (245216267860).

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

211774392140 is a wasteful number, since it uses less digits than its factorization.

211774392140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153434 (or 153432 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 211774392140 in words is "two hundred eleven billion, seven hundred seventy-four million, three hundred ninety-two thousand, one hundred forty".