155436203040 has 48 divisors (see below), whose sum is σ = 489624041088. Its totient is φ = 41449654016.

The previous prime is 155436203033. The next prime is 155436203063. The reversal of 155436203040 is 40302634551.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 155436202992 and 155436203010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161912232 + ... + 161913191.

It is an arithmetic number, because the mean of its divisors is an integer number (10200500856).

Almost surely, 2^155436203040 is an apocalyptic number.

155436203040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155436203040 is an abundant number, since it is smaller than the sum of its proper divisors (334187838048).

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

155436203040 is a wasteful number, since it uses less digits than its factorization.

155436203040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323825441 (or 323825433 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 155436203040 its reverse (40302634551), we get a palindrome (195738837591).

The spelling of 155436203040 in words is "one hundred fifty-five billion, four hundred thirty-six million, two hundred three thousand, forty".