61547045870 has 32 divisors (see below), whose sum is σ = 113006102400. Its totient is φ = 24129720576.

The previous prime is 61547045869. The next prime is 61547045893. The reversal of 61547045870 is 7854074516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176105 + ... + 392564.

It is an arithmetic number, because the mean of its divisors is an integer number (3531440700).

Almost surely, 2^61547045870 is an apocalyptic number.

61547045870 is a deficient number, since it is larger than the sum of its proper divisors (51459056530).

61547045870 is a wasteful number, since it uses less digits than its factorization.

61547045870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568892.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 61547045870 in words is "sixty-one billion, five hundred forty-seven million, forty-five thousand, eight hundred seventy".