98620995779 has 2 divisors, whose sum is σ = 98620995780. Its totient is φ = 98620995778.

The previous prime is 98620995757. The next prime is 98620995791. The reversal of 98620995779 is 97759902689.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98620995779 - 2²⁴ = 98604218563 is a prime.

It is a super-2 number, since 2×98620995779² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (98620995079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49310497889 + 49310497890.

It is an arithmetic number, because the mean of its divisors is an integer number (49310497890).

Almost surely, 2^98620995779 is an apocalyptic number.

98620995779 is a deficient number, since it is larger than the sum of its proper divisors (1).

98620995779 is an equidigital number, since it uses as much as digits as its factorization.

98620995779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 154314720, while the sum is 71.

The spelling of 98620995779 in words is "ninety-eight billion, six hundred twenty million, nine hundred ninety-five thousand, seven hundred seventy-nine".