407213667991 has 16 divisors (see below), whose sum is σ = 438963610176. Its totient is φ = 375524787456.

The previous prime is 407213667983. The next prime is 407213667997. The reversal of 407213667991 is 199766312704.

It is not a de Polignac number, because 407213667991 - 2³ = 407213667983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407213667997) 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, 112395006 + ... + 112398628.

It is an arithmetic number, because the mean of its divisors is an integer number (27435225636).

Almost surely, 2^407213667991 is an apocalyptic number.

407213667991 is a deficient number, since it is larger than the sum of its proper divisors (31749942185).

407213667991 is a wasteful number, since it uses less digits than its factorization.

407213667991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9642.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 407213667991 in words is "four hundred seven billion, two hundred thirteen million, six hundred sixty-seven thousand, nine hundred ninety-one".