287139705070 has 16 divisors (see below), whose sum is σ = 516943194768. Its totient is φ = 114835498560.

The previous prime is 287139705059. The next prime is 287139705071. The reversal of 287139705070 is 70507931782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287139705071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2488704 + ... + 2601523.

It is an arithmetic number, because the mean of its divisors is an integer number (32308949673).

Almost surely, 2^287139705070 is an apocalyptic number.

287139705070 is a deficient number, since it is larger than the sum of its proper divisors (229803489698).

287139705070 is a wasteful number, since it uses less digits than its factorization.

287139705070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095875.

The product of its (nonzero) digits is 740880, while the sum is 49.

The spelling of 287139705070 in words is "two hundred eighty-seven billion, one hundred thirty-nine million, seven hundred five thousand, seventy".