3681404388501 has 32 divisors (see below), whose sum is σ = 5665661318400. Its totient is φ = 2082698956800.

The previous prime is 3681404388439. The next prime is 3681404388583. The reversal of 3681404388501 is 1058834041863.

It is not a de Polignac number, because 3681404388501 - 2⁹ = 3681404387989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681404388301) 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, 40272435 + ... + 40363743.

It is an arithmetic number, because the mean of its divisors is an integer number (177051916200).

Almost surely, 2^{3681404388501} is an apocalyptic number.

It is an amenable number.

3681404388501 is a deficient number, since it is larger than the sum of its proper divisors (1984256929899).

3681404388501 is a wasteful number, since it uses less digits than its factorization.

3681404388501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110429.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 3681404388501 in words is "three trillion, six hundred eighty-one billion, four hundred four million, three hundred eighty-eight thousand, five hundred one".