61428717316 has 6 divisors (see below), whose sum is σ = 107500255310. Its totient is φ = 30714358656.

The previous prime is 61428717313. The next prime is 61428717403. The reversal of 61428717316 is 61371782416.

It can be written as a sum of positive squares in only one way, i.e., 57286507716 + 4142209600 = 239346^2 + 64360^2 .

It is a super-2 number, since 2×61428717316² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61428717313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7678589661 + ... + 7678589668.

Almost surely, 2^61428717316 is an apocalyptic number.

It is an amenable number.

61428717316 is a deficient number, since it is larger than the sum of its proper divisors (46071537994).

61428717316 is a wasteful number, since it uses less digits than its factorization.

61428717316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15357179333 (or 15357179331 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The spelling of 61428717316 in words is "sixty-one billion, four hundred twenty-eight million, seven hundred seventeen thousand, three hundred sixteen".