154362420640 has 48 divisors (see below), whose sum is σ = 364761419400. Its totient is φ = 61731389440.

The previous prime is 154362420631. The next prime is 154362420679. The reversal of 154362420640 is 46024263451.

It can be written as a sum of positive squares in 4 ways, for example, as 152153044624 + 2209376016 = 390068^2 + 47004^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 154362420640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640080 + ... + 847600.

Almost surely, 2^154362420640 is an apocalyptic number.

154362420640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154362420640 is an abundant number, since it is smaller than the sum of its proper divisors (210398998760).

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

154362420640 is a wasteful number, since it uses less digits than its factorization.

154362420640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212185 (or 212177 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 154362420640 in words is "one hundred fifty-four billion, three hundred sixty-two million, four hundred twenty thousand, six hundred forty".