155546567542 has 4 divisors (see below), whose sum is σ = 233319851316. Its totient is φ = 77773283770.

The previous prime is 155546567521. The next prime is 155546567593. The reversal of 155546567542 is 245765645551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245765645551 = 8663 ⋅28369577.

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, 38886641884 + ... + 38886641887.

It is an arithmetic number, because the mean of its divisors is an integer number (58329962829).

Almost surely, 2^155546567542 is an apocalyptic number.

155546567542 is a deficient number, since it is larger than the sum of its proper divisors (77773283774).

155546567542 is an equidigital number, since it uses as much as digits as its factorization.

155546567542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77773283773.

The product of its digits is 25200000, while the sum is 55.

The spelling of 155546567542 in words is "one hundred fifty-five billion, five hundred forty-six million, five hundred sixty-seven thousand, five hundred forty-two".