97821497626 has 16 divisors (see below), whose sum is σ = 150492502440. Its totient is φ = 47660209920.

The previous prime is 97821497623. The next prime is 97821497629. The reversal of 97821497626 is 62679412879.

It is an interprime number because it is at equal distance from previous prime (97821497623) and next prime (97821497629).

It can be written as a sum of positive squares in 4 ways, for example, as 36557822401 + 61263675225 = 191201^2 + 247515^2 .

It is not an unprimeable number, because it can be changed into a prime (97821497623) 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 7 ways as a sum of consecutive naturals, for example, 651531 + ... + 787486.

Almost surely, 2^97821497626 is an apocalyptic number.

97821497626 is a deficient number, since it is larger than the sum of its proper divisors (52671004814).

97821497626 is a wasteful number, since it uses less digits than its factorization.

97821497626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439889.

The product of its digits is 18289152, while the sum is 61.

The spelling of 97821497626 in words is "ninety-seven billion, eight hundred twenty-one million, four hundred ninety-seven thousand, six hundred twenty-six".