97987654854 has 96 divisors (see below), whose sum is σ = 223213929120. Its totient is φ = 32212857600.

The previous prime is 97987654847. The next prime is 97987654907. The reversal of 97987654854 is 45845678979.

97987654854 is a `hidden beast` number, since 9 + 7 + 9 + 8 + 76 + 548 + 5 + 4 = 666.

It is a super-2 number, since 2×97987654854² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18207244 + ... + 18212624.

It is an arithmetic number, because the mean of its divisors is an integer number (2325145095).

Almost surely, 2^97987654854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97987654854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111606964560).

97987654854 is an abundant number, since it is smaller than the sum of its proper divisors (125226274266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97987654854 is a wasteful number, since it uses less digits than its factorization.

97987654854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5908 (or 5896 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 72.

The spelling of 97987654854 in words is "ninety-seven billion, nine hundred eighty-seven million, six hundred fifty-four thousand, eight hundred fifty-four".