536264155981 has 2 divisors, whose sum is σ = 536264155982. Its totient is φ = 536264155980.

The previous prime is 536264155939. The next prime is 536264156003. The reversal of 536264155981 is 189551462635.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415069659081 + 121194496900 = 644259^2 + 348130^2 .

It is a cyclic number.

It is not a de Polignac number, because 536264155981 - 2²⁹ = 535727285069 is a prime.

It is a super-2 number, since 2×536264155981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (536264155681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268132077990 + 268132077991.

It is an arithmetic number, because the mean of its divisors is an integer number (268132077991).

Almost surely, 2^536264155981 is an apocalyptic number.

It is an amenable number.

536264155981 is a deficient number, since it is larger than the sum of its proper divisors (1).

536264155981 is an equidigital number, since it uses as much as digits as its factorization.

536264155981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776000, while the sum is 55.

The spelling of 536264155981 in words is "five hundred thirty-six billion, two hundred sixty-four million, one hundred fifty-five thousand, nine hundred eighty-one".