20361779234629 has 16 divisors (see below), whose sum is σ = 23287864320000. Its totient is φ = 17440013607984.

The previous prime is 20361779234609. The next prime is 20361779234677. The reversal of 20361779234629 is 92643297716302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20361779234629 - 2²¹ = 20361777137477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361779234609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53867712 + ... + 54244390.

It is an arithmetic number, because the mean of its divisors is an integer number (1455491520000).

Almost surely, 2^{20361779234629} is an apocalyptic number.

It is an amenable number.

20361779234629 is a deficient number, since it is larger than the sum of its proper divisors (2926085085371).

20361779234629 is a wasteful number, since it uses less digits than its factorization.

20361779234629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382392.

The product of its (nonzero) digits is 41150592, while the sum is 61.

The spelling of 20361779234629 in words is "twenty trillion, three hundred sixty-one billion, seven hundred seventy-nine million, two hundred thirty-four thousand, six hundred twenty-nine".