61253453670 has 32 divisors (see below), whose sum is σ = 149499959040. Its totient is φ = 16057402080.

The previous prime is 61253453663. The next prime is 61253453671. The reversal of 61253453670 is 7635435216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61253453671) 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, 17301466 + ... + 17305005.

It is an arithmetic number, because the mean of its divisors is an integer number (4671873720).

Almost surely, 2^61253453670 is an apocalyptic number.

61253453670 is an abundant number, since it is smaller than the sum of its proper divisors (88246505370).

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

61253453670 is a wasteful number, since it uses less digits than its factorization.

61253453670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34606540.

The product of its (nonzero) digits is 453600, while the sum is 42.

Adding to 61253453670 its reverse (7635435216), we get a palindrome (68888888886).

The spelling of 61253453670 in words is "sixty-one billion, two hundred fifty-three million, four hundred fifty-three thousand, six hundred seventy".