4001015547156 has 24 divisors (see below), whose sum is σ = 9336565189504. Its totient is φ = 1333548671040.

The previous prime is 4001015546993. The next prime is 4001015547157. The reversal of 4001015547156 is 6517455101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001015547157) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15261865 + ... + 15521808.

Almost surely, 2^{4001015547156} is an apocalyptic number.

It is an amenable number.

4001015547156 is an abundant number, since it is smaller than the sum of its proper divisors (5335549642348).

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

4001015547156 is a wasteful number, since it uses less digits than its factorization.

4001015547156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30794511 (or 30794509 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 39.

The spelling of 4001015547156 in words is "four trillion, one billion, fifteen million, five hundred forty-seven thousand, one hundred fifty-six".