61229122761 has 8 divisors (see below), whose sum is σ = 81645627424. Its totient is φ = 40816016640.

The previous prime is 61229122727. The next prime is 61229122777. The reversal of 61229122761 is 16722192216.

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

It is not a de Polignac number, because 61229122761 - 2¹⁴ = 61229106377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61229122261) 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, 807295 + ... + 879876.

It is an arithmetic number, because the mean of its divisors is an integer number (10205703428).

Almost surely, 2^61229122761 is an apocalyptic number.

It is an amenable number.

61229122761 is a deficient number, since it is larger than the sum of its proper divisors (20416504663).

61229122761 is a wasteful number, since it uses less digits than its factorization.

61229122761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699271.

The product of its digits is 36288, while the sum is 39.

The spelling of 61229122761 in words is "sixty-one billion, two hundred twenty-nine million, one hundred twenty-two thousand, seven hundred sixty-one".