20077132646 has 8 divisors (see below), whose sum is σ = 30116477160. Its totient is φ = 10038306928.

The previous prime is 20077132637. The next prime is 20077132657. The reversal of 20077132646 is 64623177002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20077132646² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11351 + ... + 200706.

It is an arithmetic number, because the mean of its divisors is an integer number (3764559645).

Almost surely, 2^20077132646 is an apocalyptic number.

20077132646 is a deficient number, since it is larger than the sum of its proper divisors (10039344514).

20077132646 is a wasteful number, since it uses less digits than its factorization.

20077132646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259398.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 20077132646 in words is "twenty billion, seventy-seven million, one hundred thirty-two thousand, six hundred forty-six".