155541692494 has 4 divisors (see below), whose sum is σ = 233312538744. Its totient is φ = 77770846246.

The previous prime is 155541692479. The next prime is 155541692503. The reversal of 155541692494 is 494296145551.

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, 38885423122 + ... + 38885423125.

It is an arithmetic number, because the mean of its divisors is an integer number (58328134686).

Almost surely, 2^155541692494 is an apocalyptic number.

155541692494 is a deficient number, since it is larger than the sum of its proper divisors (77770846250).

155541692494 is an equidigital number, since it uses as much as digits as its factorization.

155541692494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77770846249.

The product of its digits is 7776000, while the sum is 55.

The spelling of 155541692494 in words is "one hundred fifty-five billion, five hundred forty-one million, six hundred ninety-two thousand, four hundred ninety-four".