98501188561921 has 16 divisors (see below), whose sum is σ = 99417627691200. Its totient is φ = 97588181972160.

The previous prime is 98501188561901. The next prime is 98501188561927. The reversal of 98501188561921 is 12916588110589.

It is a cyclic number.

It is not a de Polignac number, because 98501188561921 - 2⁵ = 98501188561889 is a prime.

It is a super-2 number, since 2×98501188561921² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98501188561927) 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 15 ways as a sum of consecutive naturals, for example, 1417921830 + ... + 1417991296.

It is an arithmetic number, because the mean of its divisors is an integer number (6213601730700).

Almost surely, 2^{98501188561921} is an apocalyptic number.

It is an amenable number.

98501188561921 is a deficient number, since it is larger than the sum of its proper divisors (916439129279).

98501188561921 is a wasteful number, since it uses less digits than its factorization.

98501188561921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93984.

The product of its (nonzero) digits is 12441600, while the sum is 64.

The spelling of 98501188561921 in words is "ninety-eight trillion, five hundred one billion, one hundred eighty-eight million, five hundred sixty-one thousand, nine hundred twenty-one".