61855254000 has 120 divisors (see below), whose sum is σ = 216039846672. Its totient is φ = 16494729600.

The previous prime is 61855253983. The next prime is 61855254023. The reversal of 61855254000 is 45255816.

61855254000 is a `hidden beast` number, since 61 + 8 + 5 + 52 + 540 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1700202 + ... + 1736201.

Almost surely, 2^61855254000 is an apocalyptic number.

61855254000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61855254000 is an abundant number, since it is smaller than the sum of its proper divisors (154184592672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61855254000 is a wasteful number, since it uses less digits than its factorization.

61855254000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436432 (or 3436413 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 61855254000 in words is "sixty-one billion, eight hundred fifty-five million, two hundred fifty-four thousand".