154494486864 has 400 divisors, whose sum is σ = 492611328000. Its totient is φ = 46542532608.

The previous prime is 154494486859. The next prime is 154494486947. The reversal of 154494486864 is 468684494451.

154494486864 is a `hidden beast` number, since 1 + 5 + 4 + 4 + 94 + 486 + 8 + 64 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 64398337 + ... + 64400735.

It is an arithmetic number, because the mean of its divisors is an integer number (1231528320).

Almost surely, 2^154494486864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154494486864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246305664000).

154494486864 is an abundant number, since it is smaller than the sum of its proper divisors (338116841136).

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

154494486864 is a wasteful number, since it uses less digits than its factorization.

154494486864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552 (or 2537 counting only the distinct ones).

The product of its digits is 106168320, while the sum is 63.

The spelling of 154494486864 in words is "one hundred fifty-four billion, four hundred ninety-four million, four hundred eighty-six thousand, eight hundred sixty-four".