97281536381 has 8 divisors (see below), whose sum is σ = 102036529920. Its totient is φ = 92638425168.

The previous prime is 97281536357. The next prime is 97281536383. The reversal of 97281536381 is 18363518279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97281536381 - 2¹⁴ = 97281519997 is a prime.

It is a super-2 number, since 2×97281536381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97281536383) 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, 27968801 + ... + 27972278.

It is an arithmetic number, because the mean of its divisors is an integer number (12754566240).

Almost surely, 2^97281536381 is an apocalyptic number.

It is an amenable number.

97281536381 is a deficient number, since it is larger than the sum of its proper divisors (4754993539).

97281536381 is a wasteful number, since it uses less digits than its factorization.

97281536381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55941163.

The product of its digits is 2177280, while the sum is 53.

The spelling of 97281536381 in words is "ninety-seven billion, two hundred eighty-one million, five hundred thirty-six thousand, three hundred eighty-one".