61182540517 has 8 divisors (see below), whose sum is σ = 70254293312. Its totient is φ = 52193635200.

The previous prime is 61182540481. The next prime is 61182540553. The reversal of 61182540517 is 71504528116.

It is an interprime number because it is at equal distance from previous prime (61182540481) and next prime (61182540553).

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

It is not a de Polignac number, because 61182540517 - 2⁷ = 61182540389 is a prime.

It is a super-2 number, since 2×61182540517² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61182540517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61182540917) 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, 20710284 + ... + 20713237.

It is an arithmetic number, because the mean of its divisors is an integer number (8781786664).

Almost surely, 2^61182540517 is an apocalyptic number.

It is an amenable number.

61182540517 is a deficient number, since it is larger than the sum of its proper divisors (9071752795).

61182540517 is a wasteful number, since it uses less digits than its factorization.

61182540517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41423739.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 61182540517 in words is "sixty-one billion, one hundred eighty-two million, five hundred forty thousand, five hundred seventeen".