1001551655016 has 192 divisors, whose sum is σ = 2976042139200. Its totient is φ = 301771008000.

The previous prime is 1001551655009. The next prime is 1001551655047. The reversal of 1001551655016 is 6105561551001.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101151666 + ... + 101161566.

It is an arithmetic number, because the mean of its divisors is an integer number (15500219475).

Almost surely, 2^{1001551655016} 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 1001551655016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488021069600).

1001551655016 is an abundant number, since it is smaller than the sum of its proper divisors (1974490484184).

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

1001551655016 is a wasteful number, since it uses less digits than its factorization.

1001551655016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10640 (or 10633 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 1001551655016 in words is "one trillion, one billion, five hundred fifty-one million, six hundred fifty-five thousand, sixteen".