20377663446 has 32 divisors (see below), whose sum is σ = 46607851008. Its totient is φ = 5818397760.

The previous prime is 20377663403. The next prime is 20377663447. The reversal of 20377663446 is 64436677302.

It is a junction number, because it is equal to n+sod(n) for n = 20377663395 and 20377663404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20377663447) 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, 92415 + ... + 222026.

It is an arithmetic number, because the mean of its divisors is an integer number (1456495344).

Almost surely, 2^20377663446 is an apocalyptic number.

20377663446 is an abundant number, since it is smaller than the sum of its proper divisors (26230187562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20377663446 is a wasteful number, since it uses less digits than its factorization.

20377663446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315996.

The product of its (nonzero) digits is 3048192, while the sum is 48.

The spelling of 20377663446 in words is "twenty billion, three hundred seventy-seven million, six hundred sixty-three thousand, four hundred forty-six".