61125801753885 has 32 divisors (see below), whose sum is σ = 106695224576640. Its totient is φ = 29635942348800.

The previous prime is 61125801753881. The next prime is 61125801753893. The reversal of 61125801753885 is 58835710852116.

It is a happy number.

It is not a de Polignac number, because 61125801753885 - 2² = 61125801753881 is a prime.

It is a super-2 number, since 2×61125801753885² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61125801753881) 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, 1014721 + ... + 11103209.

It is an arithmetic number, because the mean of its divisors is an integer number (3334225768020).

Almost surely, 2^{61125801753885} is an apocalyptic number.

It is an amenable number.

61125801753885 is a deficient number, since it is larger than the sum of its proper divisors (45569422822755).

61125801753885 is a wasteful number, since it uses less digits than its factorization.

61125801753885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10125229.

The product of its (nonzero) digits is 16128000, while the sum is 60.

The spelling of 61125801753885 in words is "sixty-one trillion, one hundred twenty-five billion, eight hundred one million, seven hundred fifty-three thousand, eight hundred eighty-five".