61147566734 has 16 divisors (see below), whose sum is σ = 100746564480. Its totient is φ = 27705304440.

The previous prime is 61147566721. The next prime is 61147566769. The reversal of 61147566734 is 43766574116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34980572 + ... + 34982319.

It is an arithmetic number, because the mean of its divisors is an integer number (6296660280).

Almost surely, 2^61147566734 is an apocalyptic number.

61147566734 is a deficient number, since it is larger than the sum of its proper divisors (39598997746).

61147566734 is a wasteful number, since it uses less digits than its factorization.

61147566734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69962935.

The product of its digits is 2540160, while the sum is 50.

The spelling of 61147566734 in words is "sixty-one billion, one hundred forty-seven million, five hundred sixty-six thousand, seven hundred thirty-four".