61154806850 has 48 divisors (see below), whose sum is σ = 115835711040. Its totient is φ = 24014088000.

The previous prime is 61154806819. The next prime is 61154806859. The reversal of 61154806850 is 5860845116.

It is not an unprimeable number, because it can be changed into a prime (61154806859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2177900 + ... + 2205800.

It is an arithmetic number, because the mean of its divisors is an integer number (2413243980).

Almost surely, 2^61154806850 is an apocalyptic number.

61154806850 is a deficient number, since it is larger than the sum of its proper divisors (54680904190).

61154806850 is a wasteful number, since it uses less digits than its factorization.

61154806850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28715 (or 28710 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

The spelling of 61154806850 in words is "sixty-one billion, one hundred fifty-four million, eight hundred six thousand, eight hundred fifty".