70985405783 has 2 divisors, whose sum is σ = 70985405784. Its totient is φ = 70985405782.

The previous prime is 70985405713. The next prime is 70985405809. The reversal of 70985405783 is 38750458907.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70985405783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70985405713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35492702891 + 35492702892.

It is an arithmetic number, because the mean of its divisors is an integer number (35492702892).

Almost surely, 2^70985405783 is an apocalyptic number.

70985405783 is a deficient number, since it is larger than the sum of its proper divisors (1).

70985405783 is an equidigital number, since it uses as much as digits as its factorization.

70985405783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 70985405783 in words is "seventy billion, nine hundred eighty-five million, four hundred five thousand, seven hundred eighty-three".