82512407511 has 8 divisors (see below), whose sum is σ = 122240603760. Its totient is φ = 55008271656.

The previous prime is 82512407489. The next prime is 82512407573. The reversal of 82512407511 is 11570421528.

It is a happy number.

It is not a de Polignac number, because 82512407511 - 2⁶ = 82512407447 is a prime.

It is a super-2 number, since 2×82512407511² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82512407611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1528007520 + ... + 1528007573.

It is an arithmetic number, because the mean of its divisors is an integer number (15280075470).

Almost surely, 2^82512407511 is an apocalyptic number.

82512407511 is a deficient number, since it is larger than the sum of its proper divisors (39728196249).

82512407511 is a wasteful number, since it uses less digits than its factorization.

82512407511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056015102 (or 3056015096 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 82512407511 in words is "eighty-two billion, five hundred twelve million, four hundred seven thousand, five hundred eleven".