1663077919880 has 64 divisors (see below), whose sum is σ = 4029930757440. Its totient is φ = 614034392832.

The previous prime is 1663077919879. The next prime is 1663077919889. The reversal of 1663077919880 is 889197703661.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is not an unprimeable number, because it can be changed into a prime (1663077919889) 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, 16833587 + ... + 16932093.

It is an arithmetic number, because the mean of its divisors is an integer number (62967668085).

Almost surely, 2^{1663077919880} is an apocalyptic number.

1663077919880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663077919880 is an abundant number, since it is smaller than the sum of its proper divisors (2366852837560).

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

1663077919880 is a wasteful number, since it uses less digits than its factorization.

1663077919880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130998 (or 130994 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 65.

The spelling of 1663077919880 in words is "one trillion, six hundred sixty-three billion, seventy-seven million, nine hundred nineteen thousand, eight hundred eighty".