97621013519 has 2 divisors, whose sum is σ = 97621013520. Its totient is φ = 97621013518.

The previous prime is 97621013513. The next prime is 97621013557. The reversal of 97621013519 is 91531012679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97621013519 - 2³² = 93326046223 is a prime.

It is a super-2 number, since 2×97621013519² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97621013519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97621013513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48810506759 + 48810506760.

It is an arithmetic number, because the mean of its divisors is an integer number (48810506760).

Almost surely, 2^97621013519 is an apocalyptic number.

97621013519 is a deficient number, since it is larger than the sum of its proper divisors (1).

97621013519 is an equidigital number, since it uses as much as digits as its factorization.

97621013519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The spelling of 97621013519 in words is "ninety-seven billion, six hundred twenty-one million, thirteen thousand, five hundred nineteen".