46861577989 has 2 divisors, whose sum is σ = 46861577990. Its totient is φ = 46861577988.

The previous prime is 46861577969. The next prime is 46861578097. The reversal of 46861577989 is 98977516864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46643040900 + 218537089 = 215970^2 + 14783^2 .

It is a cyclic number.

It is not a de Polignac number, because 46861577989 - 2²³ = 46853189381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46861577969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23430788994 + 23430788995.

It is an arithmetic number, because the mean of its divisors is an integer number (23430788995).

Almost surely, 2^46861577989 is an apocalyptic number.

It is an amenable number.

46861577989 is a deficient number, since it is larger than the sum of its proper divisors (1).

46861577989 is an equidigital number, since it uses as much as digits as its factorization.

46861577989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182891520, while the sum is 70.

The spelling of 46861577989 in words is "forty-six billion, eight hundred sixty-one million, five hundred seventy-seven thousand, nine hundred eighty-nine".