705540031851 has 24 divisors (see below), whose sum is σ = 949473698544. Its totient is φ = 466020505600.

The previous prime is 705540031817. The next prime is 705540031873. The reversal of 705540031851 is 158130045507.

It is not a de Polignac number, because 705540031851 - 2³⁷ = 568101078379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (705540031151) 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 in 23 ways as a sum of consecutive naturals, for example, 26694595 + ... + 26721011.

It is an arithmetic number, because the mean of its divisors is an integer number (39561404106).

Almost surely, 2^705540031851 is an apocalyptic number.

705540031851 is a deficient number, since it is larger than the sum of its proper divisors (243933666693).

705540031851 is a wasteful number, since it uses less digits than its factorization.

705540031851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27119 (or 26970 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 39.

The spelling of 705540031851 in words is "seven hundred five billion, five hundred forty million, thirty-one thousand, eight hundred fifty-one".