16457061731 has 4 divisors (see below), whose sum is σ = 17953158264. Its totient is φ = 14960965200.

The previous prime is 16457061713. The next prime is 16457061739. The reversal of 16457061731 is 13716075461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16457061731 - 2¹⁸ = 16456799587 is a prime.

It is a super-2 number, since 2×16457061731² (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 (16457061739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748048250 + ... + 748048271.

It is an arithmetic number, because the mean of its divisors is an integer number (4488289566).

Almost surely, 2^16457061731 is an apocalyptic number.

16457061731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16457061731 is a deficient number, since it is larger than the sum of its proper divisors (1496096533).

16457061731 is a wasteful number, since it uses less digits than its factorization.

16457061731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496096532.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 16457061731 in words is "sixteen billion, four hundred fifty-seven million, sixty-one thousand, seven hundred thirty-one".