557720450040 has 64 divisors (see below), whose sum is σ = 1801866074400. Its totient is φ = 137285033472.

The previous prime is 557720450011. The next prime is 557720450041. The reversal of 557720450040 is 40054027755.

It is a super-2 number, since 2×557720450040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557720450041) 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, 178754995 + ... + 178758114.

Almost surely, 2^557720450040 is an apocalyptic number.

It is an amenable number.

557720450040 is an abundant number, since it is smaller than the sum of its proper divisors (1244145624360).

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

557720450040 is a wasteful number, since it uses less digits than its factorization.

557720450040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357513136 (or 357513132 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 39.

Adding to 557720450040 its reverse (40054027755), we get a palindrome (597774477795).

The spelling of 557720450040 in words is "five hundred fifty-seven billion, seven hundred twenty million, four hundred fifty thousand, forty".