153047771638 has 4 divisors (see below), whose sum is σ = 229571657460. Its totient is φ = 76523885818.

The previous prime is 153047771609. The next prime is 153047771687. The reversal of 153047771638 is 836177740351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836177740351 = 17 ⋅49186925903.

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, 38261942908 + ... + 38261942911.

It is an arithmetic number, because the mean of its divisors is an integer number (57392914365).

Almost surely, 2^153047771638 is an apocalyptic number.

153047771638 is a deficient number, since it is larger than the sum of its proper divisors (76523885822).

153047771638 is an equidigital number, since it uses as much as digits as its factorization.

153047771638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76523885821.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The spelling of 153047771638 in words is "one hundred fifty-three billion, forty-seven million, seven hundred seventy-one thousand, six hundred thirty-eight".