5781978072 has 96 divisors (see below), whose sum is σ = 17391661200. Its totient is φ = 1779058944.

The previous prime is 5781978071. The next prime is 5781978077. The reversal of 5781978072 is 2708791875.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5781978071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42693 + ... + 115700.

Almost surely, 2^5781978072 is an apocalyptic number.

5781978072 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

5781978072 is an abundant number, since it is smaller than the sum of its proper divisors (11609683128).

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

5781978072 is a wasteful number, since it uses less digits than its factorization.

5781978072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158434 (or 158411 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 54.

The square root of 5781978072 is about 76039.3192499775. The cubic root of 5781978072 is about 1794.8389271026.

The spelling of 5781978072 in words is "five billion, seven hundred eighty-one million, nine hundred seventy-eight thousand, seventy-two".