812752157501 has 2 divisors, whose sum is σ = 812752157502. Its totient is φ = 812752157500.

The previous prime is 812752157491. The next prime is 812752157537. The reversal of 812752157501 is 105751257218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 744249564601 + 68502592900 = 862699^2 + 261730^2 .

It is a cyclic number.

It is not a de Polignac number, because 812752157501 - 2²² = 812747963197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812752150501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406376078750 + 406376078751.

It is an arithmetic number, because the mean of its divisors is an integer number (406376078751).

Almost surely, 2^812752157501 is an apocalyptic number.

It is an amenable number.

812752157501 is a deficient number, since it is larger than the sum of its proper divisors (1).

812752157501 is an equidigital number, since it uses as much as digits as its factorization.

812752157501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196000, while the sum is 44.

The spelling of 812752157501 in words is "eight hundred twelve billion, seven hundred fifty-two million, one hundred fifty-seven thousand, five hundred one".