61240734453 has 8 divisors (see below), whose sum is σ = 84288322816. Its totient is φ = 39510151200.

The previous prime is 61240734439. The next prime is 61240734479. The reversal of 61240734453 is 35443704216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61240734453 - 2⁸ = 61240734197 is a prime.

It is a super-2 number, since 2×61240734453² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61240734413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329251168 + ... + 329251353.

It is an arithmetic number, because the mean of its divisors is an integer number (10536040352).

Almost surely, 2^61240734453 is an apocalyptic number.

It is an amenable number.

61240734453 is a deficient number, since it is larger than the sum of its proper divisors (23047588363).

61240734453 is a wasteful number, since it uses less digits than its factorization.

61240734453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658502555.

The product of its (nonzero) digits is 241920, while the sum is 39.

The spelling of 61240734453 in words is "sixty-one billion, two hundred forty million, seven hundred thirty-four thousand, four hundred fifty-three".