1672700726505 has 32 divisors (see below), whose sum is σ = 2710177763328. Its totient is φ = 880892280000.

The previous prime is 1672700726423. The next prime is 1672700726507. The reversal of 1672700726505 is 5056270072761.

It is not a de Polignac number, because 1672700726505 - 2¹² = 1672700722409 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1672700726507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1832821 + ... + 2589330.

It is an arithmetic number, because the mean of its divisors is an integer number (84693055104).

Almost surely, 2^{1672700726505} is an apocalyptic number.

1672700726505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1672700726505 is a deficient number, since it is larger than the sum of its proper divisors (1037477036823).

1672700726505 is a wasteful number, since it uses less digits than its factorization.

1672700726505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4422477.

The product of its (nonzero) digits is 1234800, while the sum is 48.

The spelling of 1672700726505 in words is "one trillion, six hundred seventy-two billion, seven hundred million, seven hundred twenty-six thousand, five hundred five".