98651377457 has 2 divisors, whose sum is σ = 98651377458. Its totient is φ = 98651377456.

The previous prime is 98651377399. The next prime is 98651377463. The reversal of 98651377457 is 75477315689.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72538110241 + 26113267216 = 269329^2 + 161596^2 .

It is a cyclic number.

It is not a de Polignac number, because 98651377457 - 2¹² = 98651373361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98651377457.

It is not a weakly prime, because it can be changed into another prime (98651377477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49325688728 + 49325688729.

It is an arithmetic number, because the mean of its divisors is an integer number (49325688729).

Almost surely, 2^98651377457 is an apocalyptic number.

It is an amenable number.

98651377457 is a deficient number, since it is larger than the sum of its proper divisors (1).

98651377457 is an equidigital number, since it uses as much as digits as its factorization.

98651377457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44452800, while the sum is 62.

The spelling of 98651377457 in words is "ninety-eight billion, six hundred fifty-one million, three hundred seventy-seven thousand, four hundred fifty-seven".