154195119540 has 288 divisors, whose sum is σ = 588304394496. Its totient is φ = 31756677120.

The previous prime is 154195119539. The next prime is 154195119563. The reversal of 154195119540 is 45911591451.

154195119540 is a `hidden beast` number, since 1 + 5 + 4 + 1 + 9 + 511 + 95 + 40 = 666.

It is a super-2 number, since 2×154195119540² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1516954 + ... + 1615406.

It is an arithmetic number, because the mean of its divisors is an integer number (2042723592).

Almost surely, 2^154195119540 is an apocalyptic number.

154195119540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154195119540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294152197248).

154195119540 is an abundant number, since it is smaller than the sum of its proper divisors (434109274956).

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

154195119540 is a wasteful number, since it uses less digits than its factorization.

154195119540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98599 (or 98594 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 45.

The spelling of 154195119540 in words is "one hundred fifty-four billion, one hundred ninety-five million, one hundred nineteen thousand, five hundred forty".