97412027881 has 9 divisors (see below), whose sum is σ = 113318573949. Its totient is φ = 83494151244.

The previous prime is 97412027873. The next prime is 97412027897. The reversal of 97412027881 is 18872021479.

The square root of 97412027881 is 312109.

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

It is not a de Polignac number, because 97412027881 - 2³ = 97412027873 is a prime.

It is a super-2 number, since 2×97412027881² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (97412027281) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2162470 + ... + 2207056.

It is an arithmetic number, because the mean of its divisors is an integer number (12590952661).

Almost surely, 2^97412027881 is an apocalyptic number.

97412027881 is the 312109-th square number.

97412027881 is the 156055-th centered octagonal number.

It is an amenable number.

97412027881 is a deficient number, since it is larger than the sum of its proper divisors (15906546068).

97412027881 is an frugal number, since it uses more digits than its factorization.

97412027881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89188 (or 44594 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

Multiplying 97412027881 by its sum of digits (49), we get a square (4773189366169 = 2184763²).

97412027881 divided by its sum of digits (49) gives a square (1988000569 = 44587²).

It can be divided in two parts, 974120 and 27881, that added together give a palindrome (1002001).

The spelling of 97412027881 in words is "ninety-seven billion, four hundred twelve million, twenty-seven thousand, eight hundred eighty-one".