219425642497 has 16 divisors (see below), whose sum is σ = 223530015744. Its totient is φ = 215350450000.

The previous prime is 219425642407. The next prime is 219425642507. The reversal of 219425642497 is 794246524912.

It is a cyclic number.

It is not a de Polignac number, because 219425642497 - 2²³ = 219417253889 is a prime.

It is a super-2 number, since 2×219425642497² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219425642407) 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, 62211348 + ... + 62214874.

It is an arithmetic number, because the mean of its divisors is an integer number (13970625984).

Almost surely, 2^219425642497 is an apocalyptic number.

It is an amenable number.

219425642497 is a deficient number, since it is larger than the sum of its proper divisors (4104373247).

219425642497 is a wasteful number, since it uses less digits than its factorization.

219425642497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340.

The product of its digits is 8709120, while the sum is 55.

The spelling of 219425642497 in words is "two hundred nineteen billion, four hundred twenty-five million, six hundred forty-two thousand, four hundred ninety-seven".