211151020350505 has 16 divisors (see below), whose sum is σ = 266724843310080. Its totient is φ = 160025588019072.

The previous prime is 211151020350493. The next prime is 211151020350509. The reversal of 211151020350505 is 505053020151112.

It is a cyclic number.

It is not a de Polignac number, because 211151020350505 - 2²⁷ = 211150886132777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211151020350509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29072004 + ... + 35601733.

It is an arithmetic number, because the mean of its divisors is an integer number (16670302706880).

Almost surely, 2^{211151020350505} is an apocalyptic number.

It is an amenable number.

211151020350505 is a deficient number, since it is larger than the sum of its proper divisors (55573822959575).

211151020350505 is a wasteful number, since it uses less digits than its factorization.

211151020350505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64708128.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 211151020350505 in words is "two hundred eleven trillion, one hundred fifty-one billion, twenty million, three hundred fifty thousand, five hundred five".