157555454777 has 4 divisors (see below), whose sum is σ = 180063376896. Its totient is φ = 135047532660.

The previous prime is 157555454741. The next prime is 157555454803. The reversal of 157555454777 is 777454555751.

157555454777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 157555454777 - 2³⁰ = 156481712953 is a prime.

It is a super-3 number, since 3×157555454777³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157555454377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11253961049 + ... + 11253961062.

It is an arithmetic number, because the mean of its divisors is an integer number (45015844224).

Almost surely, 2^157555454777 is an apocalyptic number.

It is an amenable number.

157555454777 is a deficient number, since it is larger than the sum of its proper divisors (22507922119).

157555454777 is an equidigital number, since it uses as much as digits as its factorization.

157555454777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22507922118.

The product of its digits is 120050000, while the sum is 62.

The spelling of 157555454777 in words is "one hundred fifty-seven billion, five hundred fifty-five million, four hundred fifty-four thousand, seven hundred seventy-seven".