98728253551 has 4 divisors (see below), whose sum is σ = 98780854392. Its totient is φ = 98675652712.

The previous prime is 98728253543. The next prime is 98728253633. The reversal of 98728253551 is 15535282789.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98728253551 - 2³ = 98728253543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 98728253492 and 98728253501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98728203551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26297605 + ... + 26301358.

It is an arithmetic number, because the mean of its divisors is an integer number (24695213598).

Almost surely, 2^98728253551 is an apocalyptic number.

98728253551 is a deficient number, since it is larger than the sum of its proper divisors (52600841).

98728253551 is a wasteful number, since it uses less digits than its factorization.

98728253551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52600840.

The product of its digits is 6048000, while the sum is 55.

The spelling of 98728253551 in words is "ninety-eight billion, seven hundred twenty-eight million, two hundred fifty-three thousand, five hundred fifty-one".