9701523857 has 4 divisors (see below), whose sum is σ = 9743888820. Its totient is φ = 9659158896.

The previous prime is 9701523827. The next prime is 9701523863. The reversal of 9701523857 is 7583251079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7583251079 = 293 ⋅25881403.

It can be written as a sum of positive squares in 2 ways, for example, as 6756182416 + 2945341441 = 82196^2 + 54271^2 .

It is a cyclic number.

It is not a de Polignac number, because 9701523857 - 2¹⁰ = 9701522833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9701523827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21182138 + ... + 21182595.

It is an arithmetic number, because the mean of its divisors is an integer number (2435972205).

Almost surely, 2^9701523857 is an apocalyptic number.

It is an amenable number.

9701523857 is a deficient number, since it is larger than the sum of its proper divisors (42364963).

9701523857 is a wasteful number, since it uses less digits than its factorization.

9701523857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42364962.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 9701523857 is about 98496.3139259536. The cubic root of 9701523857 is about 2132.7829095891.

The spelling of 9701523857 in words is "nine billion, seven hundred one million, five hundred twenty-three thousand, eight hundred fifty-seven".