611145262155450 has 96 divisors (see below), whose sum is σ = 1653435058383360. Its totient is φ = 148155591083200.

The previous prime is 611145262155433. The next prime is 611145262155451. The reversal of 611145262155450 is 54551262541116.

It is a self number, because there is not a number n which added to its sum of digits gives 611145262155450.

It is not an unprimeable number, because it can be changed into a prime (611145262155451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 321592957 + ... + 323487743.

It is an arithmetic number, because the mean of its divisors is an integer number (17223281858160).

Almost surely, 2^{611145262155450} is an apocalyptic number.

611145262155450 is an abundant number, since it is smaller than the sum of its proper divisors (1042289796227910).

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

611145262155450 is a wasteful number, since it uses less digits than its factorization.

611145262155450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090292 (or 2090287 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 48.

The spelling of 611145262155450 in words is "six hundred eleven trillion, one hundred forty-five billion, two hundred sixty-two million, one hundred fifty-five thousand, four hundred fifty".