98405420584651 has 4 divisors (see below), whose sum is σ = 100262126633472. Its totient is φ = 96548714535832.

The previous prime is 98405420584643. The next prime is 98405420584661. The reversal of 98405420584651 is 15648502450489.

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 98405420584651 - 2³ = 98405420584643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98405420584651.

It is not an unprimeable number, because it can be changed into a prime (98405420584661) 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, 928353024331 + ... + 928353024436.

It is an arithmetic number, because the mean of its divisors is an integer number (25065531658368).

Almost surely, 2^{98405420584651} is an apocalyptic number.

98405420584651 is a deficient number, since it is larger than the sum of its proper divisors (1856706048821).

98405420584651 is a wasteful number, since it uses less digits than its factorization.

98405420584651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856706048820.

The product of its (nonzero) digits is 55296000, while the sum is 61.

The spelling of 98405420584651 in words is "ninety-eight trillion, four hundred five billion, four hundred twenty million, five hundred eighty-four thousand, six hundred fifty-one".