155042635040 has 48 divisors (see below), whose sum is σ = 378918865080. Its totient is φ = 59878533120.

The previous prime is 155042635039. The next prime is 155042635067. The reversal of 155042635040 is 40536240551.

It can be written as a sum of positive squares in 4 ways, for example, as 136447494544 + 18595140496 = 369388^2 + 136364^2 .

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, 16702541 + ... + 16711820.

Almost surely, 2^155042635040 is an apocalyptic number.

155042635040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155042635040 is an abundant number, since it is smaller than the sum of its proper divisors (223876230040).

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

155042635040 is a wasteful number, since it uses less digits than its factorization.

155042635040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33414405 (or 33414397 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 155042635040 its reverse (40536240551), we get a palindrome (195578875591).

The spelling of 155042635040 in words is "one hundred fifty-five billion, forty-two million, six hundred thirty-five thousand, forty".