61637041123 has 8 divisors (see below), whose sum is σ = 72080526848. Its totient is φ = 51603103944.

The previous prime is 61637041121. The next prime is 61637041139. The reversal of 61637041123 is 32114073616.

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

It is not a de Polignac number, because 61637041123 - 2¹ = 61637041121 is a prime.

It is a super-2 number, since 2×61637041123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61637041121) 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, 102386811 + ... + 102387412.

It is an arithmetic number, because the mean of its divisors is an integer number (9010065856).

Almost surely, 2^61637041123 is an apocalyptic number.

61637041123 is a deficient number, since it is larger than the sum of its proper divisors (10443485725).

61637041123 is a wasteful number, since it uses less digits than its factorization.

61637041123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204774273.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 61637041123 in words is "sixty-one billion, six hundred thirty-seven million, forty-one thousand, one hundred twenty-three".