154261642540 has 48 divisors (see below), whose sum is σ = 324932832000. Its totient is φ = 61517613312.

The previous prime is 154261642519. The next prime is 154261642541. The reversal of 154261642540 is 45246162451.

It is a junction number, because it is equal to n+sod(n) for n = 154261642493 and 154261642502.

It is not an unprimeable number, because it can be changed into a prime (154261642541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10141861 + ... + 10157059.

It is an arithmetic number, because the mean of its divisors is an integer number (6769434000).

Almost surely, 2^154261642540 is an apocalyptic number.

154261642540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154261642540 is an abundant number, since it is smaller than the sum of its proper divisors (170671189460).

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

154261642540 is a wasteful number, since it uses less digits than its factorization.

154261642540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16714 (or 16712 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 154261642540 in words is "one hundred fifty-four billion, two hundred sixty-one million, six hundred forty-two thousand, five hundred forty".