97037857081 has 9 divisors (see below), whose sum is σ = 106665212773. Its totient is φ = 88213118620.

The previous prime is 97037857073. The next prime is 97037857117. The reversal of 97037857081 is 18075873079.

It is a happy number.

The square root of 97037857081 is 311509.

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

It is not a de Polignac number, because 97037857081 - 2³ = 97037857073 is a prime.

It is a super-2 number, since 2×97037857081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97037857181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3412440 + ... + 3440758.

Almost surely, 2^97037857081 is an apocalyptic number.

97037857081 is the 311509-th square number.

97037857081 is the 155755-th centered octagonal number.

It is an amenable number.

97037857081 is a deficient number, since it is larger than the sum of its proper divisors (9627355692).

97037857081 is an frugal number, since it uses more digits than its factorization.

97037857081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56660 (or 28330 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 55.

It can be divided in two parts, 970 and 37857081, that added together give a triangular number (37858051 = T₈₇₀₁).

The spelling of 97037857081 in words is "ninety-seven billion, thirty-seven million, eight hundred fifty-seven thousand, eighty-one".