61301285771 has 32 divisors (see below), whose sum is σ = 69653565696. Its totient is φ = 53461296000.

The previous prime is 61301285743. The next prime is 61301285861. The reversal of 61301285771 is 17758210316.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61301285771 - 2⁶ = 61301285707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61301285701) 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, 28765376 + ... + 28767506.

It is an arithmetic number, because the mean of its divisors is an integer number (2176673928).

Almost surely, 2^61301285771 is an apocalyptic number.

61301285771 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

61301285771 is a deficient number, since it is larger than the sum of its proper divisors (8352279925).

61301285771 is a wasteful number, since it uses less digits than its factorization.

61301285771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 61301285771 in words is "sixty-one billion, three hundred one million, two hundred eighty-five thousand, seven hundred seventy-one".