642453013461 has 96 divisors (see below), whose sum is σ = 1061432491392. Its totient is φ = 343444684800.

The previous prime is 642453013451. The next prime is 642453013507. The reversal of 642453013461 is 164310354246.

642453013461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 642453013461 - 2⁵ = 642453013429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642453013441) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 450211630 + ... + 450213056.

It is an arithmetic number, because the mean of its divisors is an integer number (11056588452).

Almost surely, 2^642453013461 is an apocalyptic number.

It is an amenable number.

642453013461 is a deficient number, since it is larger than the sum of its proper divisors (418979477931).

642453013461 is a wasteful number, since it uses less digits than its factorization.

642453013461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419 (or 2412 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 642453013461 in words is "six hundred forty-two billion, four hundred fifty-three million, thirteen thousand, four hundred sixty-one".