655772681450 has 48 divisors (see below), whose sum is σ = 1237687729344. Its totient is φ = 258453350400.

The previous prime is 655772681429. The next prime is 655772681453. The reversal of 655772681450 is 54186277556.

It is a super-2 number, since 2×655772681450² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (655772681453) 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, 5719082 + ... + 5832618.

It is an arithmetic number, because the mean of its divisors is an integer number (25785161028).

Almost surely, 2^655772681450 is an apocalyptic number.

655772681450 is a deficient number, since it is larger than the sum of its proper divisors (581915047894).

655772681450 is a wasteful number, since it uses less digits than its factorization.

655772681450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115247 (or 115242 counting only the distinct ones).

The product of its (nonzero) digits is 14112000, while the sum is 56.

The spelling of 655772681450 in words is "six hundred fifty-five billion, seven hundred seventy-two million, six hundred eighty-one thousand, four hundred fifty".