20378040467556 has 24 divisors (see below), whose sum is σ = 47548845044064. Its totient is φ = 6792668162560.

The previous prime is 20378040467489. The next prime is 20378040467573. The reversal of 20378040467556 is 65576404087302.

It is a happy number.

It is a super-2 number, since 2×20378040467556² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20378040467496 and 20378040467505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7975876 + ... + 10216196.

It is an arithmetic number, because the mean of its divisors is an integer number (1981201876836).

Almost surely, 2^{20378040467556} is an apocalyptic number.

It is an amenable number.

20378040467556 is an abundant number, since it is smaller than the sum of its proper divisors (27170804576508).

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

20378040467556 is a wasteful number, since it uses less digits than its factorization.

20378040467556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998331 (or 2998329 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 57.

The spelling of 20378040467556 in words is "twenty trillion, three hundred seventy-eight billion, forty million, four hundred sixty-seven thousand, five hundred fifty-six".