155421035014540 has 48 divisors (see below), whose sum is σ = 340604017854912. Its totient is φ = 59460336167936.

The previous prime is 155421035014537. The next prime is 155421035014549. The reversal of 155421035014540 is 45410530124551.

It is a super-2 number, since 2×155421035014540² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155421035014493 and 155421035014502.

It is not an unprimeable number, because it can be changed into a prime (155421035014549) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9130009 + ... + 19854448.

It is an arithmetic number, because the mean of its divisors is an integer number (7095917038644).

Almost surely, 2^{155421035014540} is an apocalyptic number.

155421035014540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155421035014540 is an abundant number, since it is smaller than the sum of its proper divisors (185182982840372).

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

155421035014540 is a wasteful number, since it uses less digits than its factorization.

155421035014540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28996146 (or 28996144 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 155421035014540 in words is "one hundred fifty-five trillion, four hundred twenty-one billion, thirty-five million, fourteen thousand, five hundred forty".