55867265840 has 40 divisors (see below), whose sum is σ = 133059483648. Its totient is φ = 21801858560.

The previous prime is 55867265833. The next prime is 55867265851. The reversal of 55867265840 is 4856276855.

It is a tau number, because it is divible by the number of its divisors (40).

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, 8513072 + ... + 8519631.

Almost surely, 2^55867265840 is an apocalyptic number.

It is an amenable number.

55867265840 is an abundant number, since it is smaller than the sum of its proper divisors (77192217808).

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

55867265840 is a wasteful number, since it uses less digits than its factorization.

55867265840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17032757 (or 17032751 counting only the distinct ones).

The product of its (nonzero) digits is 16128000, while the sum is 56.

The spelling of 55867265840 in words is "fifty-five billion, eight hundred sixty-seven million, two hundred sixty-five thousand, eight hundred forty".