61118040 has 32 divisors (see below), whose sum is σ = 183354480. Its totient is φ = 16298112.

The previous prime is 61118033. The next prime is 61118053. The reversal of 61118040 is 4081116.

It is a junction number, because it is equal to n+sod(n) for n = 61117998 and 61118016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254539 + ... + 254778.

Almost surely, 2^61118040 is an apocalyptic number.

61118040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61118040 is an abundant number, since it is smaller than the sum of its proper divisors (122236440).

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

61118040 is a wasteful number, since it uses less digits than its factorization.

61118040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509331 (or 509327 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 61118040 is about 7817.8027603669. The cubic root of 61118040 is about 393.9034695278.

Adding to 61118040 its reverse (4081116), we get a palindrome (65199156).

The spelling of 61118040 in words is "sixty-one million, one hundred eighteen thousand, forty".