61001542000 has 240 divisors, whose sum is σ = 179084662848. Its totient is φ = 19683225600.

The previous prime is 61001541961. The next prime is 61001542001. The reversal of 61001542000 is 24510016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61001542001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4038462 + ... + 4053538.

Almost surely, 2^61001542000 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 61001542000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89542331424).

61001542000 is an abundant number, since it is smaller than the sum of its proper divisors (118083120848).

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

61001542000 is a wasteful number, since it uses less digits than its factorization.

61001542000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15141 (or 15108 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 61001542000 in words is "sixty-one billion, one million, five hundred forty-two thousand".