98687757478021 has 8 divisors (see below), whose sum is σ = 99158261479200. Its totient is φ = 98218372393680.

The previous prime is 98687757478001. The next prime is 98687757478027. The reversal of 98687757478021 is 12087475778689.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 98687757478021 - 2⁵ = 98687757477989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98687757478027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279552391 + ... + 279905188.

It is an arithmetic number, because the mean of its divisors is an integer number (12394782684900).

Almost surely, 2^{98687757478021} is an apocalyptic number.

It is an amenable number.

98687757478021 is a deficient number, since it is larger than the sum of its proper divisors (470504001179).

98687757478021 is a wasteful number, since it uses less digits than its factorization.

98687757478021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559458419.

The product of its (nonzero) digits is 2655313920, while the sum is 79.

The spelling of 98687757478021 in words is "ninety-eight trillion, six hundred eighty-seven billion, seven hundred fifty-seven million, four hundred seventy-eight thousand, twenty-one".