61142457007 has 6 divisors (see below), whose sum is σ = 64529851128. Its totient is φ = 57924432612.

The previous prime is 61142456987. The next prime is 61142457017. The reversal of 61142457007 is 70075424116.

It is a de Polignac number, because none of the positive numbers 2^k-61142457007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61142457017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84684483 + ... + 84685204.

It is an arithmetic number, because the mean of its divisors is an integer number (10754975188).

Almost surely, 2^61142457007 is an apocalyptic number.

61142457007 is a deficient number, since it is larger than the sum of its proper divisors (3387394121).

61142457007 is a wasteful number, since it uses less digits than its factorization.

61142457007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169369725 (or 169369706 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 61142457007 in words is "sixty-one billion, one hundred forty-two million, four hundred fifty-seven thousand, seven".