215355034077 has 16 divisors (see below), whose sum is σ = 304041133440. Its totient is φ = 135120061952.

The previous prime is 215355034039. The next prime is 215355034079. The reversal of 215355034077 is 770430553512.

It is a cyclic number.

It is not a de Polignac number, because 215355034077 - 2¹⁴ = 215355017693 is a prime.

It is a super-3 number, since 3×215355034077³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215355034079) 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, 1980049 + ... + 2085977.

It is an arithmetic number, because the mean of its divisors is an integer number (19002570840).

Almost surely, 2^215355034077 is an apocalyptic number.

It is an amenable number.

215355034077 is a deficient number, since it is larger than the sum of its proper divisors (88686099363).

215355034077 is a wasteful number, since it uses less digits than its factorization.

215355034077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145812.

The product of its (nonzero) digits is 441000, while the sum is 42.

Adding to 215355034077 its reverse (770430553512), we get a palindrome (985785587589).

The spelling of 215355034077 in words is "two hundred fifteen billion, three hundred fifty-five million, thirty-four thousand, seventy-seven".