32151717481 has 15 divisors (see below), whose sum is σ = 34863792803. Its totient is φ = 29650536240.

The previous prime is 32151717443. The next prime is 32151717497. The reversal of 32151717481 is 18471715123.

The square root of 32151717481 is 179309.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 31279105881 + 872611600 = 176859^2 + 29540^2 .

It is not a de Polignac number, because 32151717481 - 2¹⁷ = 32151586409 is a prime.

It is a super-2 number, since 2×32151717481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32151517481) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 30302691 + ... + 30303751.

Almost surely, 2^32151717481 is an apocalyptic number.

32151717481 is the 179309-th square number.

32151717481 is the 89655-th centered octagonal number.

It is an amenable number.

32151717481 is a deficient number, since it is larger than the sum of its proper divisors (2712075322).

32151717481 is an frugal number, since it uses more digits than its factorization.

32151717481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174 (or 1074 counting only the distinct ones).

The product of its digits is 47040, while the sum is 40.

The spelling of 32151717481 in words is "thirty-two billion, one hundred fifty-one million, seven hundred seventeen thousand, four hundred eighty-one".