155432154040 has 32 divisors (see below), whose sum is σ = 351949891680. Its totient is φ = 61776853632.

The previous prime is 155432154023. The next prime is 155432154041. The reversal of 155432154040 is 40451234551.

It is a junction number, because it is equal to n+sod(n) for n = 155432153987 and 155432154005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155432154041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12368892 + ... + 12381451.

It is an arithmetic number, because the mean of its divisors is an integer number (10998434115).

Almost surely, 2^155432154040 is an apocalyptic number.

155432154040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155432154040 is an abundant number, since it is smaller than the sum of its proper divisors (196517737640).

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

155432154040 is a wasteful number, since it uses less digits than its factorization.

155432154040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24750511 (or 24750507 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 155432154040 its reverse (40451234551), we get a palindrome (195883388591).

The spelling of 155432154040 in words is "one hundred fifty-five billion, four hundred thirty-two million, one hundred fifty-four thousand, forty".