61455070000 has 100 divisors (see below), whose sum is σ = 148909658656. Its totient is φ = 24562080000.

The previous prime is 61455069937. The next prime is 61455070021. The reversal of 61455070000 is 7055416.

It is a tau number, because it is divible by the number of its divisors (100).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22208617 + ... + 22211383.

Almost surely, 2^61455070000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61455070000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74454829328).

61455070000 is an abundant number, since it is smaller than the sum of its proper divisors (87454588656).

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

61455070000 is a wasteful number, since it uses less digits than its factorization.

61455070000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016 (or 4995 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The spelling of 61455070000 in words is "sixty-one billion, four hundred fifty-five million, seventy thousand".