20147400231077 has 4 divisors (see below), whose sum is σ = 23025600264096. Its totient is φ = 17269200198060.

The previous prime is 20147400231061. The next prime is 20147400231149. The reversal of 20147400231077 is 77013200474102.

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 20147400231077 - 2⁴ = 20147400231061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20147400231077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20147400230077) 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, 1439100016499 + ... + 1439100016512.

It is an arithmetic number, because the mean of its divisors is an integer number (5756400066024).

Almost surely, 2^{20147400231077} is an apocalyptic number.

It is an amenable number.

20147400231077 is a deficient number, since it is larger than the sum of its proper divisors (2878200033019).

20147400231077 is an equidigital number, since it uses as much as digits as its factorization.

20147400231077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878200033018.

The product of its (nonzero) digits is 65856, while the sum is 38.

The spelling of 20147400231077 in words is "twenty trillion, one hundred forty-seven billion, four hundred million, two hundred thirty-one thousand, seventy-seven".