158378283677 has 4 divisors (see below), whose sum is σ = 159040954560. Its totient is φ = 157715612796.

The previous prime is 158378283673. The next prime is 158378283697. The reversal of 158378283677 is 776382873851.

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, and also an emirpimes, since its reverse is a distinct semiprime: 776382873851 = 13 ⋅59721759527.

It is a cyclic number.

It is not a de Polignac number, because 158378283677 - 2² = 158378283673 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158378283671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331335083 + ... + 331335560.

It is an arithmetic number, because the mean of its divisors is an integer number (39760238640).

Almost surely, 2^158378283677 is an apocalyptic number.

It is an amenable number.

158378283677 is a deficient number, since it is larger than the sum of its proper divisors (662670883).

158378283677 is an equidigital number, since it uses as much as digits as its factorization.

158378283677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662670882.

The product of its digits is 94832640, while the sum is 65.

The spelling of 158378283677 in words is "one hundred fifty-eight billion, three hundred seventy-eight million, two hundred eighty-three thousand, six hundred seventy-seven".