16040537731 has 16 divisors (see below), whose sum is σ = 17543796480. Its totient is φ = 14600125440.

The previous prime is 16040537717. The next prime is 16040537749. The reversal of 16040537731 is 13773504061.

It is a cyclic number.

It is not a de Polignac number, because 16040537731 - 2¹⁹ = 16040013443 is a prime.

It is a super-2 number, since 2×16040537731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16040537701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 838485 + ... + 857401.

It is an arithmetic number, because the mean of its divisors is an integer number (1096487280).

Almost surely, 2^16040537731 is an apocalyptic number.

16040537731 is a deficient number, since it is larger than the sum of its proper divisors (1503258749).

16040537731 is a wasteful number, since it uses less digits than its factorization.

16040537731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20574.

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 16040537731 in words is "sixteen billion, forty million, five hundred thirty-seven thousand, seven hundred thirty-one".