155291838150 has 72 divisors (see below), whose sum is σ = 402596497800. Its totient is φ = 39610651520.

The previous prime is 155291838131. The next prime is 155291838151. The reversal of 155291838150 is 51838192551.

It is a self number, because there is not a number n which added to its sum of digits gives 155291838150.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155291838151) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 899175 + ... + 1057874.

It is an arithmetic number, because the mean of its divisors is an integer number (5591618025).

Almost surely, 2^155291838150 is an apocalyptic number.

155291838150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155291838150 is an abundant number, since it is smaller than the sum of its proper divisors (247304659650).

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

155291838150 is a wasteful number, since it uses less digits than its factorization.

155291838150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957110 (or 1957082 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 48.

The spelling of 155291838150 in words is "one hundred fifty-five billion, two hundred ninety-one million, eight hundred thirty-eight thousand, one hundred fifty".