61140652222540 has 96 divisors (see below), whose sum is σ = 144776816190720. Its totient is φ = 21497836972800.

The previous prime is 61140652222523. The next prime is 61140652222549. The reversal of 61140652222540 is 4522225604116.

It is a junction number, because it is equal to n+sod(n) for n = 61140652222493 and 61140652222502.

It is not an unprimeable number, because it can be changed into a prime (61140652222549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37817842 + ... + 39401401.

It is an arithmetic number, because the mean of its divisors is an integer number (1508091835320).

Almost surely, 2^{61140652222540} is an apocalyptic number.

It is an amenable number.

61140652222540 is an abundant number, since it is smaller than the sum of its proper divisors (83636163968180).

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

61140652222540 is a wasteful number, since it uses less digits than its factorization.

61140652222540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77219383 (or 77219381 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

Adding to 61140652222540 its reverse (4522225604116), we get a palindrome (65662877826656).

The spelling of 61140652222540 in words is "sixty-one trillion, one hundred forty billion, six hundred fifty-two million, two hundred twenty-two thousand, five hundred forty".