155390543038 has 4 divisors (see below), whose sum is σ = 233085814560. Its totient is φ = 77695271518.

The previous prime is 155390543029. The next prime is 155390543069. The reversal of 155390543038 is 830345093551.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38847635758 + ... + 38847635761.

It is an arithmetic number, because the mean of its divisors is an integer number (58271453640).

Almost surely, 2^155390543038 is an apocalyptic number.

155390543038 is a deficient number, since it is larger than the sum of its proper divisors (77695271522).

155390543038 is an equidigital number, since it uses as much as digits as its factorization.

155390543038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77695271521.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 155390543038 in words is "one hundred fifty-five billion, three hundred ninety million, five hundred forty-three thousand, thirty-eight".