97621013513 has 2 divisors, whose sum is σ = 97621013514. Its totient is φ = 97621013512.

The previous prime is 97621013507. The next prime is 97621013519. The reversal of 97621013513 is 31531012679.

It is a balanced prime because it is at equal distance from previous prime (97621013507) and next prime (97621013519).

It can be written as a sum of positive squares in only one way, i.e., 88356373504 + 9264640009 = 297248^2 + 96253^2 .

It is a cyclic number.

It is not a de Polignac number, because 97621013513 - 2¹⁴ = 97620997129 is a prime.

It is not a weakly prime, because it can be changed into another prime (97621013519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48810506756 + 48810506757.

It is an arithmetic number, because the mean of its divisors is an integer number (48810506757).

Almost surely, 2^97621013513 is an apocalyptic number.

It is an amenable number.

97621013513 is a deficient number, since it is larger than the sum of its proper divisors (1).

97621013513 is an equidigital number, since it uses as much as digits as its factorization.

97621013513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The spelling of 97621013513 in words is "ninety-seven billion, six hundred twenty-one million, thirteen thousand, five hundred thirteen".