20334145377 has 32 divisors (see below), whose sum is σ = 34078851072. Its totient is φ = 10497489984.

The previous prime is 20334145339. The next prime is 20334145411. The reversal of 20334145377 is 77354143302.

It is not a de Polignac number, because 20334145377 - 2¹⁵ = 20334112609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (20334144377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779553 + ... + 805214.

It is an arithmetic number, because the mean of its divisors is an integer number (1064964096).

Almost surely, 2^20334145377 is an apocalyptic number.

It is an amenable number.

20334145377 is a deficient number, since it is larger than the sum of its proper divisors (13744705695).

20334145377 is a wasteful number, since it uses less digits than its factorization.

20334145377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584837.

The product of its (nonzero) digits is 211680, while the sum is 39.

Adding to 20334145377 its reverse (77354143302), we get a palindrome (97688288679).

The spelling of 20334145377 in words is "twenty billion, three hundred thirty-four million, one hundred forty-five thousand, three hundred seventy-seven".